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參數資料
型號: W921E840
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位的微控制器)
中文描述: 4-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 49/64頁
文件大小: 603K
代理商: W921E840
W921E840
Publication Publication Release Date: August 1997
- 49 - Revision A1
9.2 AC Characteristics
(V
DD
V
SS
= 3.0V, F
OSC
= 4.0 MHz, T
A
= 25
°
C, all outputs unloaded)
PARAMETER
SYMBO
L
F
OSC1
F
OSC2
F
OSC3
CONDITIONS
MIN.
TYP.
MAX.
UNIT
400
800
2
KHz
KHz
MHz
Operating Frequency
OSCI,
OSCO
F
OSC4
F
OSC5
F
SUB
3.58
4
32.768
MHz
MHz
KHz
Operating Sub-frequency
XT,
XT
One Machine
Cycle
Instruction Cycle Time
T
I
4/F
OSC
S
Serial Port Data Ready
Time
Serial Port Data Hold Time
T
DR
200
nS
T
DH
T
RAW
200
2
nS
T
I
RESET
Active Width
ROW 1 Frequency (697Hz)
F
ROW1
F
OSC
= 4 MHz,
2 MHz, 800 KHz,
400 KHz
F
OSC
= 3.58 MHz
Same as ROW1
-0.5
+0.5
%
-0.92
-0.5
-0.92
-0.5
-0.92
-0.5
-0.92
-0.5
-0.92
-0.5
-0.92
-0.5
-0.92
-0.5
-0.92
+0.92
+0.5
+0.92
+0.5
+0.92
+0.5
+0.92
+0.5
+0.92
+0.5
+0.92
+0.5
+0.92
+0.5
+0.92
ROW 2 Frequency (770 Hz)
F
ROW2
%
ROW 3 Frequency (852 Hz)
F
ROW3
Same as ROW1
%
ROW 4 Frequency (941 Hz)
F
ROW4
Same as ROW1
%
COL 1 Frequency (1209 Hz)
F
COL1
Same as ROW1
%
COL 2 Frequency (1336 Hz)
F
COL2
Same as ROW1
%
COL 3 Frequency (1477 Hz)
F
COL3
Same as ROW1
%
COL 4 Frequency (1633 Hz)
F
COL4
Same as ROW1
%
Oscillator Start Time
T
OST
OSCO
2
17
/F
OSC
mS
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