P80C31BH Intel, P80C31BH Datasheet - Page 14
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P80C31BH
Manufacturer Part Number
P80C31BH
Description
Manufacturer
Intel
Datasheet
1.P80C31BH.pdf
(16 pages)
Specifications of P80C31BH
Cpu Family
MCS51
Device Core
8051
Device Core Size
8b
Frequency (max)
16MHz
Program Memory Type
ROMLess
Program Memory Size
Not Required
Total Internal Ram Size
128Byte
# I/os (max)
32
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Through Hole
Pin Count
40
Package Type
PDIP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P80C31BH
Manufacturer:
INT
Quantity:
3 000
Company:
Part Number:
P80C31BH
Manufacturer:
INT
Quantity:
3 000
Company:
Part Number:
P80C31BH
Manufacturer:
INT
Quantity:
5 510
Part Number:
P80C31BH
Manufacturer:
INTEL
Quantity:
20 000
Company:
Part Number:
P80C31BH-1
Manufacturer:
INT
Quantity:
6 100
Part Number:
P80C31BH-1
Manufacturer:
INTEL
Quantity:
20 000
AUTOMOTIVE 80C31BH 80C51BH 87C51
Quick-Pulse Programming
(EPROM Only)
The setup for Microcontroller Quick-Pulse Program-
ming is shown in Figure 11 Note that the 87C51 is
running with a 4 to 6 MHz oscillator The reason the
oscillator needs to be running is that the device is
executing internal address and program data trans-
fers
The address of the EPROM location to be pro-
grammed is applied to Ports 1 and 2 as shown in
Figure 11 The code byte to be programmed into
that location is applied to Port 0 RST PSEN and
pins of Ports 2 and 3 specified in Table 3 are held at
the ‘‘Program Code Data’’ levels indicated in Table
2 Then ALE PROG is pulsed low 25 times as
shown in Figure 12
To program the Encryption Table repeat the 25-
pulse programming sequence for addresses 0
14
Figure 13 Program Verification
Figure 12 PROG Waveforms
through 1FH using the ‘‘Pgm Encryption Table’’ lev-
els Don’t forget that after the Encryption Table is
programmed verify cycles will produce only encrypt-
ed data
To program the Lock Bits repeat the 25-pulse pro-
gramming sequence using the ‘‘Pgm Lock Bit’’ lev-
els After one Lock Bit is programmed further pro-
gramming of the Code Memory and Encryption Ta-
ble is disabled However the other Lock Bit can still
be programmed
Note that the EA V
above the maximum specified V
amount of time Even a narrow glitch above that volt-
age level can cause permanent damage to the de-
vice The V
free of glitches and overshoot
PP
source should be well regulated and
PP
pin must not be allowed to go
270419 –21
PP
level for any
270419 –20