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參數(shù)資料
| 型號： | IP82C37A-5 |
| 廠商： | INTERSIL CORP |
| 元件分類： | DMA控制器 |
| 英文描述： | DIODE SCHOTTKY DUAL ISOLATED 25V 150mW 1V-vf 200mA-IFM 100mA-IF 2uA-IR SOT-563 3K/REEL |
| 中文描述： | 4 CHANNEL(S), 5 MHz, DMA CONTROLLER, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大?。?/td> | 204K |
| 代理商： | IP82C37A-5 |
S E M I C O N D U C T O R
4-192
March 1997
82C37A
CMOS High Performance
Programmable DMA Controller
Features
Compatible with the NMOS 8237A
Four Independent Maskable Channels with Autoinitial-
ization Capability
Cascadable to any Number of Channels
High Speed Data Transfers:
- Up to 4MBytes/sec with 8MHz Clock
- Up to 6.25MBytes/sec with 12.5MHz Clock
Memory-to-Memory Transfers
Static CMOS Design Permits Low Power Operation
- ICCSB = 10
μ
A Maximum
- ICCOP = 2mA/MHz Maximum
Fully TTL/CMOS Compatible
Internal Registers may be Read from Software
Description
The 82C37A is an enhanced version of the industry standard
8237A Direct Memory Access (DMA) controller, fabricated
using Harris’ advanced 2 micron CMOS process. Pin
compatible with NMOS designs, the 82C37A offers
increased
functionality,
improved
dramatically reduced power consumption. The fully static
design permits gated clock operation for even further
reduction of power.
performance,
and
The 82C37A controller can improve system performance by
allowing external devices to transfer data directly to or from
system memory. Memory-to-memory transfer capability is
also provided, along with a memory block initialization fea-
ture. DMA requests may be generated by either hardware or
software, and each channel is independently programmable
with a variety of features for flexible operation.
The 82C37A is designed to be used with an external
address latch, such as the 82C82, to demultiplex the most
significant 8-bits of address. The 82C37A can be used with
industry standard microprocessors such as 80C286, 80286,
80C86, 80C88, 8086, 8088, 8085, Z80, NSC800, 80186 and
others. Multimode programmability allows the user to select
from three basic types of DMA services, and reconfiguration
under program control is possible even with the clock to the
controller stopped. Each channel has a full 64K address and
word count range, and may be programmed to autoinitialize
these registers following DMA termination (end of process).
Ordering Information
PART NUMBER
PACKAGE
TEMPERATURE
RANGE
0
o
C to +70
o
C
-40
o
C to +85
o
C
0
o
C to +70
o
C
-40
o
C to +85
o
C
0
o
C to +70
o
C
-40
o
C to +85
o
C
-55
o
C to +125
o
C
PKG. NO.
5MHz
8MHz
12.5MHz
CP82C37A-5
CP82C37A
CP82C37A-12
40 Ld PDIP
E40.6
IP82C37A-5
IP82C37A
IP82C37A-12
E40.6
CS82C37A-5
CS82C37A
CS82C37A-12
44 Ld PLCC
N44.65
IS82C37A-5
IS82C37A
IS82C37A-12
N44.65
CD82C37A-5
CD82C37A
CD82C37A-12
40 Ld CERDIP
F40.6
ID82C37A-5
ID82C37A
ID82C37A-12
F40.6
MD82C37A-5/B
MD82C37A/B
MD82C37A-12/B
F40.6
5962-9054301MQA
5962-9054302MQA
5962-9054303MQA
SMD#
F40.6
MR82C37A-5/B
MR82C37A/B
MR82C37A-12/B
44 Pad CLCC
-55
o
C to +125
o
C
J44.A
5962-9054301MXA
5962-9054302MXA
5962-9054303MXA
SMD#
J44.A
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
Harris Corporation 1997
File Number
2967.1
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