Datasheet

Philips Semiconductors Product specification
80C51/87C51/80C52/87C52
80C51 8-bit microcontroller family
4 K/8 K OTP/ROM low voltage (2.7 V–5.5 V),
low power, high speed (33 MHz), 128/256 B RAM
2000 Aug 07
32
A0–A7
1
1
1
+5V
PGM DATA
1
1
0
0 ENABLE
0
A8–A12
P1
RST
P3.6
P3.7
XTAL2
XTAL1
V
SS
V
CC
P0
EA
/V
PP
ALE/PROG
PSEN
P2.7
P2.6
P2.0–P2.5
EPROM/OTP
SU00839
4–6MHz
Figure 28. Program Verification
EPROM PROGRAMMING AND VERIFICATION CHARACTERISTICS
T
amb
= 21°C to +27°C, V
CC
= 5 V±10%, V
SS
= 0 V (See Figure 29)
SYMBOL
PARAMETER MIN MAX UNIT
V
PP
Programming supply voltage 12.5 13.0 V
I
PP
Programming supply current 50
1
mA
1/t
CLCL
Oscillator frequency 4 6 MHz
t
AVGL
Address setup to PROG low 48t
CLCL
t
GHAX
Address hold after PROG 48t
CLCL
t
DVGL
Data setup to PROG low 48t
CLCL
t
GHDX
Data hold after PROG 48t
CLCL
t
EHSH
P2.7 (ENABLE) high to V
PP
48t
CLCL
t
SHGL
V
PP
setup to PROG low 10 µs
t
GHSL
V
PP
hold after PROG 10 µs
t
GLGH
PROG width 90 110 µs
t
AVQV
Address to data valid 48t
CLCL
t
ELQZ
ENABLE low to data valid 48t
CLCL
t
EHQZ
Data float after ENABLE 0 48t
CLCL
t
GHGL
PROG high to PROG low 10 µs
NOTE:
1. Not tested.