Rainbow Electronics T89C51RD2 - Manual (Page 82)

Rev. F - 15 February, 2001 82
T89C51RD2
9.5.8. Shift Register Timing Waveforms
Table 46. AC Parameters for a Variable Clock
Symbol Type Standard
Clock
X2 Clock X parameter
for -M range X parameter
for -L range
Units
T
XLXL
Min 12 T 6 T ns
T
QVHX
Min 10 T - x 5 T - x 50 50 ns
T
XHQX
Min 2 T - x T - x 20 20 ns
T
XHDX
Min x x 0 0 ns
T
XHDV
Max 10 T - x 5 T- x 133 133 ns
VALID VALID INPUT DATA VALID VALID
0 1 2 3 4 5 6 8 7
ALE
CLOCK
OUTPUT DATA
WRITE to SBUF
CLEAR RI
T
XLXL
T
QVXH
T
XHQX
T
XHDV
T
XHDX SET TI
SET RI
INSTRUCTION
0 1 2 3 4 5 6 7
VALID VALID VALID VALID