Flash Programming and Verification Characteristics
TA = 0°C to 70°C, VCC = 5.0 ± 10%
Symbol
Parameter
Min
Max
VPP
Programming Enable Voltage
IPP
Programming Enable Current
tDVGL
Data Setup to PROG Low
tGHDX
Data Hold After PROG
tEHSH
P3.4 (ENABLE) High to VPP
tSHGL
VPP Setup to PROG Low
tGHSL
VPP Hold After PROG
tGLGH
PROG Width
tELQV
ENABLE Low to Data Valid
tEHQZ
Data Float After ENABLE
tGHBL
PROG High to BUSY Low
tWC
Byte Write Cycle Time
tBHIH
RDY/BSY to Increment Clock Delay
tIHIL
Increment Clock High
Note: Only used in 12-volt programming mode.
11.5
12.5
250
1.0
1.0
1.0
10
10
1
110
1.0
0
1.0
50
2.0
1.0
200
Flash Programming and Verification Waveforms
Units
V
µA
µs
µs
µs
µs
µs
µs
µs
µs
ns
ms
µs
ns
4-10
AT89C1051