Mapping Controller Operating voltage: 2.7V~5.2V Built-in oscillat

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Mapping Controller Operating voltage: 2.7V~5.2V Built-in oscillat

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HT1622
Mapping Controller
Operating voltage: 2.7V~5.2V Built-in oscillator bias, duty, frame frequency 64Hz Max. patterns, commons, segments Built-in internal resistor type bias generator 3-wire serial interface kinds time base/WDT selection Time base overflow output Built-in display address auto increment
selectable buzzer frequencies (2kHz/4kHz) Power down command reduces power consumption Software configuration feature Data mode Command mode instructions Three data accessing modes VLCD adjust operating voltage Cascade application
General Description
HT1622 peripheral device specially designed type used expand display capability. max. display segment device patterns also supports serial interface, buzzer sound, Watchdog Timer time base timer functions. HT1622 memory mapping multi-function controller. software configuration feature HT1622 make suitable multiple applications including modules display subsystems. Only three lines required interface between host controller HT1622. HT162X series have many kinds products that match various applications.
Selection Table
HT162X Built-in Osc. Crystal Osc. HT1620 HT1621 HT1622 HT16220 HT1623 HT1625 HT1626 HT1627 HT16270
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HT1622
Block Diagram
Assignment
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HT1622
Assignment
Chip size: (mil)
substrate should connected layout artwork.
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HT1622
Coordinates
-68.43 -68.43 -68.43 -69.19 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -69.36 -39.23 -32.60 -20.19 -13.56 -1.15 5.48 15.00 21.63 28.26 34.89 41.52 71.78 59.46 52.83 39.14 23.89 16.32 9.69 3.06 -3.57 -16.92 -33.83 -43.52 -50.15 -56.78 -63.41 -70.04 -71.14 -71.14 -71.14 -71.14 -71.14 -71.14 -71.91 -71.91 -71.91 -71.91 -71.91 48.15 54.78 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 69.32 14.19 7.57 0.94 -5.70 -12.32 -18.95 -25.58 -32.22 -38.85 -45.47 -52.10 -58.74 Unit: -71.91 -71.91 -10.67 -4.04 2.59 9.22 15.85 22.48 29.11 35.74 42.37 49.00 55.63 62.26 68.89 71.78 71.78 71.78 71.78 71.78 71.78 71.78 71.78 71.78 71.78 71.78 71.78
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HT1622
Description
Name Description Chip selection input with Pull-high resistor. When logic high, data command read from written HT1622 disabled. serial interface circuit also reset. logic level input pad, data command transmission between host controller HT1622 enabled. READ clock input with Pull-high resistor. Data HT1622 clocked rising edge signal. clocked data will appear data line. host controller next falling edge latch clocked data. WRITE clock input with Pull-high resistor. Data DATA line latched into HT1622 rising edge signal. Negative power supply, ground system clock comes from external clock source, external clock source should connected OSCI pad. Positive power supply operating voltage input Time base Watchdog Timer overflow flag, NMOS open drain output 2kHz 4kHz tone frequency output pair connected common outputs segment outputs
12~14 15~22 23~54
DATA OSCI VLCD T1~T3 COM0~COM7 SEG0~SEG31
Serial data input/output with Pull-high resistor
Absolute Maximum Ratings
Supply Voltage.-0.3V 5.5V Input Voltage .VSS-0.3V VDD+0.3V Storage Temperature.-50°C 125°C Operating Temperature .-25°C 75°C
Note: These stress ratings only. Stresses exceeding range specified under Absolute Maximum Ratings cause substantial damage device. Functional operation this device other conditions beyond those listed specification implied prolonged exposure extreme conditions affect device reliability.
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HT1622
D.C. Characteristics
Symbol IDD1 IDD2 ISTB IOL1 IOH1 IOL1 IOH1 IOL2 IOH2 IOL3 IOH3 Parameter Operating Voltage Operating Current Operating Current Standby Current Input Voltage Input High Voltage DATA DATA Common Sink Current Common Source Current Segment Sink Current Segment Source Current Pull-high Resistor Test Conditions Conditions load/LCD On-chip oscillator load/LCD On-chip oscillator load Power down mode DATA, DATA, VOL=0.3V VOL=0.5V VOH=2.7V VOH=4.5V VOL=0.3V VOL=0.5V VOH=2.7V VOH=4.5V VOL=0.3V VOL=0.5V VOH=2.7V VOH=4.5V VOL=0.3V VOL=0.5V VOH=2.7V VOH=4.5V DATA, Ta=25°C Min. Typ. Max. Unit -0.9 -1.7 -1.8
-200 -450 -250 -500
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HT1622
A.C. Characteristics
Symbol fSYS1 Parameter System Clock Test Conditions fSYS2 fLCD1 fLCD2 tCOM fCLK1 fCLK2 System Clock Frame Frequency Frame Frequency Common Period Serial Data Clock pin) Serial Data Clock pin) Serial Interface Reset Pulse Width (Figure External clock source On-chip oscillator External clock source Number Duty cycle Duty cycle Write mode Read mode Write mode Read mode Conditions On-chip oscillator Ta=25°C Min. Typ. Max. Unit 3.34 6.67 1.67 3.34 n/fLCD
tCLK
Input Pulse Width (Figure
tsu1
Rise/Fall Time Serial Data Clock Width (Figure Setup Time DATA Clock Width (Figure Hold Time DATA Clock Width (Figure Setup Time Clock Width (Figure Hold Time Clock Width (Figure
April 2000
HT1622
Figure
Figure
Figure
Functional Description
Display memory structure static display organized into bits stores display data. contents directly mapped contents driver. Data READ READ-MODIFY-WRITE commands. following mapping from patterns.
Time base Watchdog Timer (WDT) time base generator share same divided (/256) counter. TIMER DIS/EN/CLR, DIS/EN/CLR EN/DIS independent from each other. Once time-out occurs, will remain logic level until command issued.
mapping
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HT1622
Timer configurations external clock selected source system frequency, command turns invalid power down mode fails carried until external clock source removed. Buzzer tone output simple tone generator implemented HT1622. tone generator output pair differential driving signals which used generate single tone. Command format HT1622 configured software setting. There mode commands configure HT1622 resource transfer display data. Name TONE TONE TONE Command Code 0000-1000-X 010X-XXXX-X 0110-XXXX-X Turn-off tone output Turn-on tone output, tone frequency 4kHz Turn-on tone output, tone frequency 2kHz following data mode command mode Operation READ WRITE READ-MODIFY-WRITE COMMAND Mode Data Data Data
Command
successive commands have been issued, command mode omitted. While system operating non-successive command non-successive address data mode, should previous operation mode will reset also. returns "0", operation mode should issued first. Function
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HT1622
Timing Diagrams
READ mode (command code
READ mode (successive address reading)
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HT1622
WRITE mode (command code
WRITE mode (successive address writing)
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HT1622
READ-MODIFY-WRITE mode (command code
EAD-MODIFY-WRITE mode (successive address accessing)
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HT1622
Command mode (command code
Mode (data command mode)
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HT1622
Application Circuits
Note: connection selected depending requirement voltage applied VLCD must lower than VDD. Adjust display, VDD=5V, VLCD=4V, VR=15kW±20%. Adjust (external pull-high resistance) user time base clock.
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HT1622
Command Summary
Name READ WRITE READMODIFYWRITE TIMER TIMER TONE TIMER TONE TONE Command Code Function Read data from Write data Read Write data Turn both system oscillator bias generator Turn system oscillator Turn display Turn display Disable time base output Disable time-out flag output Enable time base output Enable time-out flag output Turn tone outputs Clear contents time base generator Clear contents stage System clock source, on-chip oscillator System clock source, external clock source Tone frequency output: 4kHz Tone frequency output: 2kHz Disable output Enable output Time base clock output: time-out flag after: Time base clock output: time-out flag after: Time base clock output: time-out flag after: Time base clock output: time-out flag after: Def. A5A4A3A2A1A0D0D1D2D3 A5A4A3A2A1A0D0D1D2D3 A5A4A3A2A1A0D0D1D2D3 0000-0000-X 0000-0001-X 0000-0010-X 0000-0011-X 0000-0100-X 0000-0101-X 0000-0110-X 0000-0111-X 0000-1000-X 0000-1101-X 0000-1111-X 0001-10XX-X 0001-11XX-X 010X-XXXX-X 0110-XXXX-X 100X-0XXX-X 100X-1XXX-X 101X-0000-X 101X-0001-X 101X-0010-X 101X-0011-X
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HT1622
Name F128 TEST NORMAL Command Code Function Time base clock output: 16Hz time-out flag after: Time base clock output: 32Hz time-out flag after: Time base clock output: 64Hz time-out flag after: 1/16 Time base clock output: 128Hz time-out flag after: 1/32 Test mode, user use. Normal mode Def.
101X-0100-X 101X-0101-X 101X-0110-X 101X-0111-X 1110-0000-X 1110-0011-X
Note: care A5~A0 address D3~D0 data Data/Command mode Def. Power reset default bold forms, namely mode commands. these, indicates command mode successive commands have been issued, command mode except first command will omitted. source tone frequency time base/WDT clock frequency derived from on-chip 32kHz oscillator external 32kHz clock. Calculation frequency based system frequency sources stated above. recommended that host controller should initialize HT1622 after power reset, power reset fail, which turn leads malfunctioning HT1622.
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HT1622
Holtek Semiconductor Inc. (Headquarters) No.3 Creation Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) No.576, Sec.7 Chung Hsiao Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower Cheung Plaza, Cheung Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright 2000 HOLTEK SEMICONDUCTOR INC. information appearing this Data Sheet believed accurate time publication. However, Holtek assumes responsibility arising from specifications described. applications mentioned herein used solely purpose illustration Holtek makes warranty representation that such applications will suitable without further modification, recommends products application that present risk human life malfunction otherwise. Holtek reserves right alter products without prior notification. most up-to-date information, please visit site http://www.holtek.com.tw.
April 2000

Mapping Controller Operating voltage: 2.7V~5.2V Built-in oscillat

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