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IA8237
Advanced Information Sheet
Programmable DMA Controller
FEATURES
·
Form, Fit, and Function Compatible with the Intel 8237A and Harris
82C37A
·
Packaging options available: 40 Pin Plastic Dip or 44 Pin Plastic Leaded
Chip Carrier
·
·
·
Static Read/Write or Handshaking Modes
Direct Bit Set/Reset Capability
Memory-to-Memory Transfers
The IA8237 uses innovASIC’s innovative new f 3 Program to provide industry with parts that
other vendors have declared obsolete. By specifying parts through this program a customer is
assured of never having a component become obsolete again. This advanced information sheet
assumes the original part has been designed in, and so provides a summary of capabilities only. For
new designs contact innovASIC for more detailed information.
Intel is a registered trademark of Intel Corporation
Harris is a copyright trademark of Harris Corporation
Package Pinout
IOR_n
IOW_n
(1)
A7
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
IA8237
(2)
A6
40 Pin DIP
MEMR_n
(3)
A5
(4)
MEMW_n
N. C.
A4
(5)
EOP_n
A3
N. C.
N. C.
(7)
READY
HLDA
(6)
(39)
(38)
A3
A2
(8)
(7)
A2
HLDA
ADSTB
AEN
(9)
(8)
(37)
(36)
A1
A0
ADSTB
AEN
A1
A0
IA8237
(10)
(11)
(9)
44 Pin LCC
HRQ
CS_n
CLK
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
VCC
DB0
(35)
(34)
(33)
(32)
(31)
(30)
(29)
VCC
DB0
DB1
DB2
DB3
DB4
N. C.
HRQ
(12)
(13)
CS_n
DB1
CLK
RESET
DACK2
N. C.
(14)
(15)
(16)
(17)
RESET
DACK2
DB2
DB3
DACK3
DREQ3
DREQ2
DREQ1
DREQ0
VSS
DB4
DACK0
DACK1
DB5
(25)
(24)
(23)
(22)
(21)
DB6
DB7
Copyright ã 1999, InnovASIC Inc.
Customer Specific IC Solutions
INNOVASIC [ INNOVASIC, INC ]
