8051AH Datasheet, PDF (12/21 Pages) Intel Corporation – MCS51 8-BIT CONTROL-ORIENTED MICROCONTROLLERS

M=” 51 CONTROLLER
SERIAL PORT TIMING—SHIFT
Test Conditions: Over ODeratina Conditions: Load Capacitance = 80 rJF
Symbol
Parameter
12 MHz Oscillator
Min Max
VariableOscillator
Min
Max
Unite
TXLXL Serial Port Clock Cycle Time
1.0
12TCLCL
ps
TQVXH Output Data Setup to Clock Rising 700
1OTCLCL– 133
ns
Edge
TXHQX Output Data Hold after Clock
50
2TCLCL–1 17
ns
Rising Edge
TXHDX Input Data Hold after Clock Rising
o
0
ns
Edge
TXHDV Clock Rising Edge to Input Data
700
Valid
10TCLCL– 133 ns
;HI17REGISTERMODETIMINGWAVEFORMS
INSTRUCTION I
OI
1
I
2
I
3
I
4
I
5
I
6
I
7
I
8
I
ALE _{n n n n n n n n n n n n n n n n n n I}
CLOCK
I-TXLXL-7
OUTPUT OATA
,
INPUT DATA
~
WI-TXHQX I
o 1)(
1
2_x
3_x
4_x
5x
6x
7/
+
SET TI
4
SET RI
272318-8
12