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IA8237
Programmable DMA Controller
FEATURES
•
•
•
•
•
Advanced Information
Sheet
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’
innovative new
f
3
Program
to provide industry with parts that
s
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
MEMW_n
READY
A7
A6
A5
A4
(41)
IOW_n
MEMR_n
MEMW_n
N. C.
READY
HLDA
ADSTB
AEN
HRQ
CS_n
CLK
RESET
DACK2
DACK3
DREQ3
DREQ2
DREQ1
DREQ0
VSS
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(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)
A6
A5
A4
(44)
(43)
(42)
EOP_n
A3
A2
A1
A0
VCC
DB0
DB1
DB2
DB3
DB4
DACK0
DACK1
DB5
DREQ3
DREQ2
DREQ1
DREQ0
DACK3
DACK1
DACK0
DB7
DB6
VSS
DB5
DB6
DB7
N. C.
N. C.
HLDA
ADSTB
AEN
HRQ
CS_n
CLK
RESET
DACK2
N. C.
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(26)
(27)
(28)
(40)
(39)
(38)
(6)
(5)
(4)
(3)
(2)
(1)
A3
A2
A1
A0
VCC
DB0
DB1
DB2
DB3
DB4
N. C.
IOR_n
N. C.
IA8237
40 Pin DIP
EOP_n
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
IA8237
44 Pin LCC
Copyright
©
1999, InnovASIC Inc.
Customer Specific IC Solutions
IOW_n
IOR_n
(1)
(40)
A7
MEMR_n
INNOVASIC [ INNOVASIC, INC ]
