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IA8237 Programmable Controller
Advanced Information Sheet
Form, Fit, Function Compatible with Intel® 8237A Harris© 82C37A Packaging options available: Plastic Plastic Leaded Chip Carrier Static Read/Write Handshaking Modes Direct Set/Reset Capability Memory-to-Memory Transfers
IA8237 uses innovASIC' innovative Program provide industry with parts that other vendors have declared obsolete. specifying parts through this program customer assured never having component become obsolete again. This advanced information sheet assumes original part been designed provides summary capabilities only. designs contact innovASIC more detailed information.
Intel registered trademark Intel Corporation Harris copyright trademark Harris Corporation
Package Pinout
MEMW_n READY (41) IOW_n MEMR_n MEMW_n READY HLDA ADSTB CS_n RESET DACK2 DACK3 DREQ3 DREQ2 DREQ1 DREQ0 (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (39) (38) (37) (36) (35) (34) (33) (32) (31) (30) (29) (28) (27) (26) (25) (24) (23) (22) (21) (44) (43) (42) EOP_n DACK0 DACK1 DREQ3 DREQ2 DREQ1 DREQ0 DACK3 DACK1 DACK0 HLDA ADSTB CS_n RESET DACK2 (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) (40) (39) (38) IOR_n
IA8237
EOP_n (37) (36) (35) (34) (33) (32) (31) (30) (29)
IA8237
Copyright 1999, InnovASIC Inc. Customer Specific Solutions
IOW_n
IOR_n
(40)
MEMR_n
Page
IA8237 Programmable Controller
Advanced Information Sheet
IA8237 programmable direct memory access (DMA) mega-function designed functionally equivalent Intel 8237A Harris 82C37A devices. A8237 controls data transfers between memory peripherals, memory-to-memory transfers, block memory initialization. Four independently programmable channels available, requests generated hardware software. block diagram shown Figure
Functional Block Diagram Figure
EOP_n RESET CS_n READY ADSTB MEMR_n MEMW_n IOR_n IOW_n BASE ADDRESS BASE WORD COUNT CURRENT ADDRESS CURRENT WORD COUNT COMMAND CONTROL TIMING CONTROL READ BUFFER READ WRITE BUFFER DECREMENTOR TEMP WORD COUNT INC/DECREMENTOR TEMP ADDRESS BUFFER
OUTPUT BUFFER
WRITE BUFFER DREQ0_n DREQ3_n COMMAND HDLA HRQ_n DACK0 DACK3 PRIORITY ENCODER ROTATING PRIORITY LOGIC
READ BUFFER
INTERNAL DATA
BUFFER
MASK READ WRITE STATUS TEMPORARY
REQUEST
MODE
Copyright 1999, InnovASIC Inc. Customer Specific Solutions
Page
IA8237 Programmable Controller
Table Part Number IA8237-PDW40C IA8237-PLC44C IA8237-PDW40I IA8237-PLC44I Qualification Levels Environmental/ Qual Level Commercial Commercial Industrial Industrial
Advanced Information Sheet
following diagram depicts innovASIC Product Identification Number. IAXXXXX-PPPPNNNT/SP
Special Processing: Space MIL-STD-883 Temperature: Commercial Industrial Military Number Leads Package Type: Package Designator Table Base Number innovASIC Designator
Copyright 1999, InnovASIC Inc. Customer Specific Solutions
Page
IA8237 Programmable Controller
Package Designator Table
Package Type
Ceramic side brazed Dual In-line Cerdip with window Ceramic leaded chip carrier Cerdip without window Ceramic leadless chip carrier PLCC Plastic standard (300 mil) Plastic standard (600 mil) Plastic metric quad flat pack Plastic thin quad flat pack Skinny Cerdip Small outline plastic gull-wing(150 body) Small outline medium plastic gull-wing (207 body) Small outline narrow plastic gull wing (150 body) Small outline wide plastic gull wing (300 body) Skinny Plastic Shrink small outline plastic (5.3mm .208 body) Thin shrink small outline plastic Small outline large plastic gull wing (330 body) Thin small outline plastic gull-wing 20mm) [TSOP]
Advanced Information Sheet
innovASIC Designator
CPGA CBGA
Contact innovASIC other package processing options.
Copyright 1999, InnovASIC Inc. Customer Specific Solutions

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