Flash Programming and Verification Characteristics
T
A
= 0°C to 70°C, V
CC
= 5.0
±
10%
Symbol
V
PP
I
PP
t
DVGL
t
GHDX
t
EHSH
t
SHGL
t
GHSL
t
GLGH
t
ELQV
t
EHQZ
t
GHBL
t
WC
t
BHIH
t
IHIL
Note:
1.
Parameter
Programming Enable Voltage
Programming Enable Current
Data Setup to PROG Low
Data Hold After PROG
P3.4 (ENABLE) High to V
PP
V
PP
Setup to PROG Low
V
PP
Hold After PROG
PROG Width
ENABLE Low to Data Valid
Data Float After ENABLE
PROG High to BUSY Low
Byte Write Cycle Time
RDY/BSY\ to Increment Clock Delay
Increment Clock High
Only used in 12-volt programming mode.
1.0
200
0
1.0
1.0
1.0
10
10
1
110
1.0
1.0
50
2.0
Min
11.5
Max
12.5
250
Units
V
µA
µs
µs
µs
µs
µs
µs
µs
µs
ns
ms
µs
ns
Flash Programming and Verification Waveforms
4-22
AT89C2051
ATMEL [ ATMEL CORPORATION ]
