Semiconductor ML9070-02/03 This version: Sep. 1998 ML9070-02/03
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E2B0050-18-90
Semiconductor ML9070-02/03
This version: Sep. 1998 ML9070-02/03
DIRECT CONNECTED CMOS REAL TIME CLOCK/CALENDAR
ML9070-02/03 silicon gate CMOS Real Time Clock/Calendar direct busconnection Microcontroller/Microprocessor applications. on-chip 32.768 crystal oscillator time base divided provide addressable 4-bit data SECONDS, MINUTES, HOURS, WEEK, DATE, MONTH YEAR. Data access controlled 4-bit address, chip selects (CS0, CS1), WRITE, READ, ALE. ML9070-03 provided with pin. Control Registers provide SECOND error adjustment, INTERRUPT REQUEST (IRQ FLAG) BUSY status bits, clock STOP, HOLD, RESET FLAG bits, selectable INTERRUPTS rates available STD.P (STANDARD PULSE) output utilizing Control Register inputs INT/STND (INTERRUPT/STANDARD). Masking interrupt output (STD.P) accomplished MASK bit. ML9070-02/03 operate 12/24 hour format Leap Year timing automatic. interface supply voltage clock supply voltage during battery backup current consumption been realized.
FEATURES
Real time clock/calendar SECONDS, MINUTES, HOURS, WEEK, DATE, MONTH YEAR 4-bit data 4-bit address READ, WRITE ALE, CHIP SELECT INPUTS Auto leap year second error correction software Selectable interrupt outputs 1/64 second, 1second, 1minute, 1hour Stop restart clock 12/24 hour format ML9070-02 input from microcontroller. case there input from microcontroller, ML9070-03.) Wide range interface power supply Wide range clock power supply current consumption ML9070-02 18-pin plastic (DIP18-P-300-2.54) 24-pin plastic (SOP24-P-430-1.27-K) ML9070-03 16-pin plastic (DIP16-P-300-2.54) 16-Pin plastic (SOP16-P-300-1.27-K)
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(Note) ML9070-03 operates similarly when fixed "L", "H".
32.768 COUNTER
RESET STOP HOLD 30secADJ BUSY
FUNCTIONAL BLOCK DIAGRAM
24/12bit
64Hz 1-sec carry 1-min carry 1-hour carry
STD.P
GATE
time counter registers. control registers.
ML9070-02/03
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ML9070-02/03
CONFIGURATIONS
ML9070-02RA (Top View) 18-Pin Plastic STD.P STD.P ML9070-02MA (Top View) 24-Pin Plastic
CONNECTION (Unused pin)
Note)
"M9070-02" marked actual devices.
ML9070-03RA (Top View) 16-Pin Plastic STD.P STD.P ML9070-03MA (Top View) 16-Pin Plastic
Note)
"M9070-03" marked actual devices.
3/23
ML9070-02/03
(Data Data Input/output pins directly connected microcontroller reading writing clock/calendar's registers control registers. interface logically positive. When "L", "H", "H", these pins output mode. Otherwise these pins high impedance state. ML9070-03 operates similarly when fixed "L". ML9070-03, input/output these pins determined same settings those ML9070-02 except setting pin. (Address Address input microcontroller select internal clock/calendar's registers control registers Read/Write operations. Address input pins used combination with addressing registers. (Address Latch Enable) Address Latch Enable pin. This enables writing address data when address data latched when "L". Microcontroller having output should connect this otherwise should connected VDD. works independently ALE. When 4-bit microcontroller other peripheral share also used specify this ML9070-03 operates similarly when fixed "H". (WRite) Writing data performed this pin. When "L", data written into register specified rising edge (ReaD) Reading register data accomplished using this pin. When "H", "L", data this register output inhibited both simultaneously because this setting causes malfunction. CS0, (Chip Select Chip Select pins. These pins enable disable ALE, operations. work combination with another. When "H", ALE, enabled. Otherwise, device unconditionally equivalent "L", "H". details, refer "CS1 (Chip Select)" "APPLICATION NOTE". 9070-03 operates similarly when fixed "L". STD.P (STanDard Pulse) Output N-CH OPEN DRAIN type. output data controlled data (INT/ bit) content register. This priority CS1. Refer Register" "FUNCTIONAL DESCRIPTION REGISTERS".
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Semiconductor (X'Tal OSC) 32.768kHz crystals connected these pins. connection diagram shown below.
ML9070-02/03
ML9070-XX 30pF
impedance crystal should less than 30kW. When external clock used, input while should left open. oscillation crystal capacitors should placed close possible. oscillation circuit other signal lines side substrate should distant from each other. VDD, Power supply pins. used positive supply negative supply.
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ML9070-02/03
ABSOLUTE MAXIMUM RATING
Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol TSTG 25°C Condition Rating -0.3 +7.0 VSS-0.3 VDD+0.3 VSS-0.3 VDD+0.3 +150 Unit
OPERATING CONDITIONS
Parameter Power Supply Voltage Clock Supply Voltage Crystal Frequency Operating Temperature Symbol VCLK f(XT) Condition Rating 32.768 Unit
(Note) clock supply voltage assures crystal oscillation clock.
CHARACTERISTICS
(VDD 5.5V, +85°C) Parameter Input Voltage Input Voltage Input Current Input Current Input Voltage Input Voltage Input Current Input Current Output Voltage Onput Voltage Leak Current Current Consumption Current Consumption Symbol VIH1 VIL1 IIH1 IIL1 VIH2 VIL2 IIH2 IIL2 VOL2 IOFF IDD1 IDD2 Condition -400
f(XT) 32.768 VI(CS1)
Min. 4/5VDD 4/5VDD
Typ.
Max. 1/5VDD 1/5VDD
Unit Applicable Terminal STD. Input terminals other than input terminals except CS1,XT
Output Voltage VOL1
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ML9070-02/03
SWITCHING CHARACTERISTICS
ML9070-02/03 WRITE mode (ALE "H")
(VDD +85°C) Parameter Setup Time Hold Time Address Stable Before WRITE Address Stable After WRITE Pulse Width Data Setup Time Data Hold Time Recovery Time Symbol tC1S tC1H tRCV Condition Min. Max. Unit
VIH2 tC1S VIH1 VIL1 VIH1 VIL1 VIH1 VIL1 VIH1 VIH1 VIL1 VIL1 VIH1=2.2V VIL1=0.8V VIH2=
VIH2 tC1H VIH1 VIL1 tRCV VIH1 VIH1 VIL1
(Input)
(Note)
ML9070-03 input.
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Semiconductor ML9070-02 WRITE mode (with ALE)
ML9070-02/03
(VDD +85°C) Parameter Setup Time Address Setup Time Address Hold Time Pulse Width Before WRITE WRITE Pulse Width After WRITE DATA Setup Time DATA Hold Time Hold Time Recovery Time Symbol tC1S tALW tWAL tC1H tRCV Condition Min. Max. Unit
VIH2 tC1S VIH1 VIL1 VIH1 VIL1
tC1H
VIH2
VIH1
VIH1
VIL1 tALW VIH1 VIL1 VIH1 VIL1 VIH1 VIL1 VIH2=
VIL1 tWAL tRCV VIH1
(Input) VIH1=2.2V VIL1=0.8V
VIH1 VIL1
8/23
Semiconductor ML9070-02/03 READ mode (ALE "H")
ML9070-02/03
(VDD +85°C) Parameter Setup Time Hold Time Address Stable Before READ Address Stable After READ Data Data Hold Recovery Time Symbol tC1S tC1H tRCV Condition 150pF Min. Max. Unit
VIH2 tC1S VIH1 VIL1 VIH1 VIH1 VIL1 VIL1 VOL1 VOL1 VIH1=2.2V VIL1=0.8V VIH2= VIH1 VIL1
tC1H
VIH2
VIH1 VIL1 tRCV VIH1
(Output)
VOH=2.4V VOL1=0.4V
(Note)
ML9070-03 input.
9/23
Semiconductor ML9070-02 READ mode (with ALE)
ML9070-02/03
(VDD +85°C) Parameter Setup Time Address Setup Time Address Hold Time Pulse Width Before READ After READ Data DATA Hold Hold Time Recovery Time Symbol tC1S tALR tRAL tC1H tRCV Condition 150pF Min. Max. Unit
VIH2
tC1S VIH1 VIL1
VIH2 VIH1 VIL1 tC1H
VIH1 VIH1 VIL1 tALR VIH1 (Output) VIH1=2.2V VIL1=0.8V VIH2= VOH=2.4V VOL1=0.4V VIH1 VIL1 VOL1 VOL1 tRAL tRCV VIH1 VIL1
VIL1
10/23
ML9070-02/03
REGISTER TABLE
Address Input Address Input Register Name MI10 MO10 (MSB) mi40 PM/AM Data mi20 BUSY (LSB) mi10 mo10 HOLD Count value Description
1-second digit register 10-second digit register 1-minute digit register 10-minute digit register 1-hour digit register PM/AM, 10-hour digit register 1-day digit register 10-day digit register 1-month digit register 10-month digit register 1-year digit register 10-year digit register Week register Control Register Control Register Control Register
sec. IRQ-F TEST 24/12
MASK /STND STOP REST
REST RESET INT/STND INTERRUPT/STANDARD Note Bit* does exist (unrecognized during write held during read). Note sure mask AM/PM when processing 10's hour's data. Note BUSY read only. IRQ-F only "0". Setting IRQ-F done hardware. Note PM/AM bit. Note written Note (OSC FLAG) memorizes that oscillation stops. This used monitor battery. This cleared writing "0". cannot written into this bit.
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ML9070-02/03
FUNCTIONAL DESCRIPTION REGISTERS
S10, MI1, MI10, H10, D10, MO1, MO10, Y10,W These abbreviations SECOND1, SECOND10, MINUTE1, MINUTE10, HOUR1, HOUR10, DAY1, DAY10, MONTH1, MONTH10, YEAR1, YEAR10, WEEK. These values notation. registers logically positive. example, (s8, 1001 which means seconds. written bit* Register Table. bit* automatically reads "0". data written which clock register data limits, result erroneous clock data being read back. PM/AM, h20, 12-hour mode existent time AM12 through AM11 PM12 through PM11 impossble write data into h20, which fixed unconditionally. clocking. 24-hour mode existent time clock through clock. PM/AM written ignored read unconditionally. Y10, leap year ML9070 automatically recognizes leap years either Christian calendar Heisei (Japanese) calendar. Leap year When invalid month values (for instance, February 1983 November 31), month values will carried next month values when carry pulse digit generated (for instance, above dates become March 1983 December ML9070 recognizes year whose last digits divided evenly leap year. Therefore, year 2100, which does include leap day, excluded from automatic leap year correction. Year 2000 will corrected automatically since year contains leap day. user must check whether year year 2000 2100 when Y10,
12/23
ML9070-02/03
Register data limits (The table below shows possible data definition).
Week Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Flag flag memorizes that oscillation stops used monitor output battery. this indicates stop oscillation. This cleared writing "0". permitted write into this bit. cannot written this during stop oscillation.
REGISTER (Control Register) 30-sec (D3) (30-second adjustment bit) When written this bit, second digits smaller than second digits reset larger than second digits reset carry into minute digit executed. Data cannot written into registers written into REST register 125ms after writing into this because internal processing being executed. This holds 125ms after writing, returns automatically. Therefore, data should written into registers after checking that this returned "0". IRQ-F (D2) (Interrupt ReQuest Flag) This status corresponds output level STD.P output. When STD.P "L", then IRQ-F "1", when STD.P high impedance, then IRQ-F "0". IRQ-F indicates that interrupt occurred microcomputer IRQ-F "1". When register (MASK) "0", then STD.P output changes from high impedance IRQ-F changes from according timing (t1) (t0) register When register (INT/STND) (interrupt mode), STD.P output remains until IRQ-F written "0". When IRQ-F timing interrupt occurs, interrupt ignored. When (INT/STND) (Standard Pulse Output mode) STD.P output remains until either written IRQ-F IRQ-F automatically goes after 7.8125ms.
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ML9070-02/03
BUSY (D1) Internal status that indicates whether interface with microcontroller enabled disabled. write data registers (addresses HOLD must BUSY must "0". read data, BUSY must when HOLD used. BUSY kept while HOLD "1". When HOLD "0", BUSY "1". IRQ-F register operations performed regardless settings HOLD BUSY bit. When HOLD "0", BUSY unconditionally BUSY/non-BUSY checked writing HOLD bit. When BUSY (BUSY status) read, check BUSY follows Repeat BUSY checking routine writing then HOLD (HOLD HOLD BUSY check) write HOLD again micro seconds after writing HOLD bit. BUSY status lasts micro seconds second. Data cannot written BUSY bit. HOLD (D0) used reading writing registers (addresses When written this BUSY "0", clock second digit more stopped, enabling Read/ Write operations. When BUSY Read/Write completed, written HOLD bit. writing omitted, data corrupted. setting this "1", carry one-second digit prohibited inside However, carry second digit that generated during interval will corrected automatically second) once only when written this bit. However, next subsequent carry will ignored data will corrected. (Loss second) When "L", HOLD will become like that written HOLD bit.
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Semiconductor REGISTER (Control Register) (D3), (D2) (Time INT/STND Setting interrupt period INT/STND Setting periodic waveform
Period 1-64 second second minute hour
ML9070-02/03
duration that periodic waveform output level about 7.8125ms. determine output timing STD.P output. e.g.) When "1", "1", MASK
12:00PM 1:00PM
STD.P output when INT/STND
High impedance level High impedance level
STD.P output when INT/STND
When written 30-sec bit, carry occur. Therfore, (t1, STD.P output sometime level. When INT/ STND "0", this level kept maximum 9.8ms after under-second digits 30-sec cleared (the 30-sec flag returns "0"). selected interrupt period second, minute, hour, carry occurs during time S10, MI1, MI10 registers overwritten using HOLD bit, data written these registers determines interrupt timing carry, STD.P output will level after HOLD "0". (IRQ-F will "1") other cases, writing S10, MI1, MI10, registers change STD.P output. INT/STND (D1) (interrupt-to-Standard waveform switching bit) INT/STND IRQ-F level STD.P output kept until IRQ-F register) read out. INT/STND IRQ-F returns after certain time elapses (after about 7.8ms) when IRQ-F read out. level STD.P output returns high impedance after certain time elapses. 15/23
ML9070-02/03
MASK (D0) MASK inhibits setting IRQ-F flag sets STD.P output high impedance state. Interrupt mode (INT/STND "1")
MASK
interrupt generated because MASK "1". High impedance STD. output level IRQ-F Interrupt timing IRQ-F read out.
Periodic timing waveform output mode (INT/STND "0")
MASK
level output because MASK "1". High impedance STD.P output level IRQ-F Output timing Auto-return (duration 7.8125ms)
When IRQ-F read before auto-return, IRQ-F goes "0", STD.P output keeps level 7.8125 then goes into high impedance state.
16/23
Semiconductor REGISTER (Control Register) TEST (D3) TEST used testing should "0".
ML9070-02/03
24/12 (D2) (24/12 hour format) This used switch between 24-hour format 12-hour format. 24/12 24-hour format without PM/AM 24/12 12-hour format with PM/AM When 24/12 changed, data registers become undefined. Therefore, required those registers again. STOP (D1) this stops clocking restarts clocking. REST (D0) this clears under-second-time zero same time stops clocking. this restarts clocking. When "L", this goes automatically.
17/23
ML9070-02/03
APPLICATION NOTE
Power Supply
START
changes from zero (interface voltage). registers STD.P output undefined.
Power
TEST REST 24/12 STOP BEST 24/12
current time HOLD STOP Start Operation
18/23
Semiconductor (Chip Select)
ML9070-02/03
functions. accomplish interface with microcontroller/microprocessor. inhibit control bus, data address reduce input gate pass current stand-by mode. protect internal data when mode moved from standby mode. realize above functions: More than should applied ML9070 interface with microcontroller/ microprocessor. moving standby mode, lessthan should applied that data buses should disabled. standby mode, approx. should applied. When moving from standby mode, obey following timing chart.
Moving Standby Mode
Moving from Standby Mode
(MIN)
(MIN)
less
More than required interface with this
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ML9070-02/03
PACKAGE DIMENSIONS
(Unit
DIP18-P-300-2.54
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 1.30 TYP.
20/23
ML9070-02/03
(Unit
SOP24-P-430-1.27-K
Mirror finish
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 0.58 TYP.
Notes Mounting Surface Mount Type Package SOP, QFP, TSOP, SOJ, (PLCC), surface mount type packages, which very susceptible heat reflow mounting humidity absorbed storage. Therefore, before perform reflow mounting, contact Oki's responsible sales person product name, package name, number, package code desired mounting conditions (reflow method, temperature times).
21/23
ML9070-02/03
(Unit
DIP16-P-300-2.54
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 0.99 TYP.
22/23
ML9070-02/03
(Unit
SOP16-P-300-1.27-K
Mirror finish
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 0.21 TYP.
Notes Mounting Surface Mount Type Package SOP, QFP, TSOP, SOJ, (PLCC), surface mount type packages, which very susceptible heat reflow mounting humidity absorbed storage. Therefore, before perform reflow mounting, contact Oki's responsible sales person product name, package name, number, package code desired mounting conditions (reflow method, temperature times).
23/23
E2Y0002-28-41
NOTICE
information contained herein change without notice owing product and/or technical improvements. Before using product, please make sure that information being referred up-to-date. outline action examples application circuits described herein have been chosen explanation standard action performance product. When planning product, please ensure that external conditions reflected actual circuit, assembly, program designs. When designing your product, please product below specified maximum ratings within specified operating ranges including, limited operating voltage, power dissipation, operating temperature. assumes responsibility liability whatsoever failure unusual unexpected operation resulting from misuse, neglect, improper installation, repair, alteration accident, improper handling, unusual physical electrical stress including, limited exposure parameters beyond specified maximum ratings operation outside specified operating range. Neither indemnity against license third party's industrial intellectual property right, etc. granted connection with product and/or information drawings contained herein. responsibility assumed infringement third party's right which result from thereof. products listed this document intended general electronics equipment commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products authorized system application that requires special enhanced quality reliability characteristics system application where failure such system application result loss damage property, death injury humans. Such applications include, limited traffic automotive equipment, safety devices, aerospace equipment, nuclear power control, medical equipment, life-support systems. Certain products this document need government approval before they exported particular countries. purchaser assumes responsibility determining legality export these products will take appropriate necessary steps their expense these. part contents cotained herein reprinted reproduced without prior permission. MS-DOS registered trademark Microsoft Corporation.
Copyright 1998 Electric Industry Co., Ltd.
Printed Japan
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