P80C32 Intel, P80C32 Datasheet - Page 19

• Manufacturer Part Number: P80C32
• Manufacturer: Intel

Specifications of P80C32

• Cpu Family: 80C51
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 12MHz
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Total Internal Ram Size: 256Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 6V
• Operating Supply Voltage (min): 4V
• Instruction Set Architecture: CISC
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 40
• Package Type: PDIP
• Lead Free Status / Rohs Status: Not Compliant

PROGRAMMING THE EPROM
The part must be running with a 4 MHz to 6 MHz
oscillator The address of an EPROM location to be
programmed is applied to address lines while the
code byte to be programmed in that location is ap-
plied to data lines Control and program signals must
be held at the levels indicated in Table 4 Normally
EA V
PROG is to be pulsed The EA V
ALE PROG is pulsed low and then EA V
turned to a high (also refer to timing diagrams)
Program Code Data
Verify Code Data
Program Encryption
Array Address 0 –3FH
Program Lock
Bits
Read Signature Byte
Exceeding the V
time could damage the device permanently The
V
glitches
PP
PP
source must be well regulated and free of
is held at logic high until just before ALE
Mode
PP
Bit 1
Bit 2
Bit 3
NOTES
maximum for any amount of
RST
H
H
H
H
H
H
H
PP
Table 4 EPROM Programming Modes
is raised to V
PSEN
L
L
L
L
L
L
L
PP
is re-
PROG
ALE
PP
H
H
DEFINITION OF TERMS
ADDRESS LINES P1 0 – P1 7 P2 0 – P2 5 respec-
tively for A0 – A13
DATA LINES P0 0 – P0 7 for D0 – D7
CONTROL SIGNALS RST PSEN P2 6 P2 7 P3 3
P3 6 P3 7
PROGRAM SIGNALS ALE PROG EA V
12 75V
12 75V
12 75V
12 75V
12 75V
EA
V
H
H
PP
P2 6
H
H
H
L
L
L
L
P2 7
H
H
H
H
L
L
L
P3 3
H
H
H
H
H
L
L
8XC52 54 58
P3 6
H
H
H
H
L
L
L
PP
P3 7
H
H
H
H
L
L
L
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