at89c51ic2-slsim ATMEL Corporation, at89c51ic2-slsim Datasheet - Page 138
at89c51ic2-slsim
Manufacturer Part Number
at89c51ic2-slsim
Description
At89c51ic2 8-bit Flash Microcontroller With 2-wire Interface
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51IC2-SLSIM.pdf
(147 pages)
- Current page: 138 of 147
- Download datasheet (2Mb)
Shift Register Timing
Waveforms
External Clock Drive
Waveforms
AC Testing Input/Output
Waveforms
Float Waveforms
Clock Waveforms
138
AT89C51IC2
INSTRUCTION
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
INPUT DATA
CLEAR RI
T
QVXH
0
AC inputs during testing are driven at V
Timing measurement are made at V
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded V
occurs. I
Valid in normal clock mode. In X2 mode XTAL2 must be changed to XTAL2/2.
T
XHDV
INPUT/OUTPUT
0.45V
1
0
V
VALID
T
CC
XLXL
OL
-0.5V
/I
OH
T
XHQX
2
1
≥ ± 20mA.
VALID
0.2V
0.7V
T
3
XHDX
CC
2
VALID
CC
-0.1
T
V
CHCL
CC
V
V
OH
OL
0.45 V
-0.5V
+ 0.1 V
- 0.1 V
4
3
VALID
IH
FLOAT
min for a logic “1” and V
V
CC
LOAD
5
4
T
VALID
- 0.5 for a logic “1” and 0.45V for a logic “0”.
CLCX
6
5
0.2 V
0.2 V
VALID
T
CLCL
CC
CC
+ 0.9
- 0.1
V
V
7
6
T
LOAD
LOAD
VALID
CLCH
IL
T
CHCX
+ 0.1 V
- 0.1 V
max for a logic “0”.
SET TI
SET RI
8
7
VALID
4301D–8051–02/08
OH
/V
OL
level
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