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參數資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 146/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Sep. 1996
Preliminary Version 0.50
- 144 -
9.3 AC Characteristics, FDC continued
PARAMETER
SYM.
TEST
CONDITIONS
MIN.
TYP.
(NOTE 1)
MAX.
UNIT
IOW or IOR response time
from DRQ
T
MRW
6/12
/20/24
μ
S
TC width
T
TC
135/220
/260
nS
RESET width
T
RST
1.8/3/3.
5
μ
S
INDEX width
T
IDX
0.5/0.9
/1.0
μ
S
DIR setup time to STEP
T
DST
1.0/1.6
/2.0
μ
S
DIR hold time from STEP
T
STD
24/40/48
μ
S
STEP pulse width
T
STP
6.8/11.5
/13.8
7/11.7
/14
7.2/11.9
/14.2
μ
S
STEP cycle width
T
SC
Note 2
Note 2
Note 2
μ
S
WD pulse width
T
WDD
100/185
/225
125/210
/250
150/235
/275
μ
S
Write precompensation
T
WPC
100/138
/225
125/210
/250
150/235
/275
μ
S
Notes:
1. Typical values for T = 25
°
C and normal supply voltage.
2. Programmable from 2 mS through 32 mS in 2 mS increments.
9.3.2 IDE
PARAMETER
SYMBOL
MAX.
UNIT
CS0, CS1 delay from SA valid
T1
50
nS
DBENL, DBENH delay from AEN, IOCS16, SA
T2
50
nS
IDED7 to D7 delay (read cycle)
T4
50
nS
D7 to IDED7 delay (write cycle)
T3
50
nS
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