參數(shù)資料
型號: ID82C237
廠商: INTERSIL CORP
元件分類: DMA控制器
英文描述: CMOS High Performance Programmable DMA Controller
中文描述: 4 CHANNEL(S), 8 MHz, DMA CONTROLLER, CDIP40
封裝: SIDE BRAZED, DIP-40
文件頁數(shù): 24/25頁
文件大?。?/td> 158K
代理商: ID82C237
4-171
82C237
AC Test Circuits
AC Testing Input, Output Waveforms
FIGURE 15. COMPRESSED TRANSFER
FIGURE 16. RESET
Timing Waveforms
(Continued)
CLK
S4
S2
(10)
TASM
(15)
TDCL
TRLRHC
(40)
TDCTR
(16)
TDCL
(15)
(10)
TASM
TDCTR
(16)
TDCTW
(17)
TRH (31)
TRS (32)
S2
S4
TRS (32)
TRH (31)
TDCTW
(17)
A0-A7
READ
WRITE
READY
VALID
VALID
(48) TRSTD
(50) TRSTW
(49) TRSTS
IOR OR IOW
RESET
V
CC
TEST CONDITION DEFINITION TABLE
PINS
V1
R1
C1
All Outputs Except EOP
1.7V
520
100pF
EOP
V
CC
1.6K
50pF
TEST POINT
R1
V1
C1*
OUTPUT FROM
DEVICE UNDER
TEST
* Includes STRAY and FIXTURE Capacitance
NOTE: AC Testing: All AC Parameters tested as per test circuits. In-
put RISE and FALL times are driven at Ins/V. CLK input must
switch between VIHC +0.4V and VILC -0.4V
VOH
VO -0.45
0.45
VOL
OUTPUT
L OR H
Z
VOH
2.0V
0.8V
VOL
INPUT
Z
L OR H
VIH + 0.4V
VIL - 0.4V
1.5V
1.5V
VOH
VOL
OUTPUT
OUTPUT
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