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PDF UPD75P216A Data sheet ( Hoja de datos )
| Número de pieza | UPD75P216A | |
| Descripción | 4-BIT SINGLE-CHIP MICROCOMPUTER | |
| Fabricantes | NEC | |
| Logotipo |  |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75P216A
4-BIT SINGLE-CHIP MICROCOMPUTER
The µPD75P216A is a One-Time PROM version of the µPD75216A. The µPD75P216A is suitable for small-
scale production or experimental production in system development.
Also see documents for the µPD75216A.
FEATURES
• The µPD75216A compatible
• 16256 ! 8 bits of on-chip one-time PROM
• Port 6 without pull-down resistor
• High voltage output for display
S0 to S8, T0 to T9: On-chip load resistor
S9, T10 to T15: Open drain
• Power-on reset circuit is not available
• Single power supply (5 V ± 10 %)
ORDERING INFORMATION
Part Number
µPD75P216ACW
Package
64-pin plastic shrink DIP (750 mil)
Caution Pull-up resistor mask options are not available.
Quality Grade
Standard
Please refer to "Quality grade on NEC Semiconductor Devices" (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC–2670A
(O.D.No. IC-7625B )
Date Published July 1993 P
Printed in Japan
The information in this document is subject to change without notice.
The mark shows revised points.
1
© NEC CORPORATI1O9N912990
1 page  
µPD75P216A
1. PIN FUNCTIONS
1.1 PORT PINS
Pin name
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30 - P33
P40 - P43
P50 - P53
P60 - P63
PH0
PH1
PH2
PH3
Input/
output
Shared
pin
Function
Input
INT4
4-bit input port (PORT0).
I/O SCK
I/O SO
Input
SI
Input
INT0/VPP
With noise elimination function
INT1
With noise elimination function
INT2
4-bit input port (PORT1).
TI0
I/O — 4-bit I/O port (PORT2).
—
—
BUZ
I/O MD0 - MD3 Programmable 4-bit I/O port (PORT3).
I/O can be specified bit by bit.
I/O — 4-bit I/O port (PORT4).
Can directly drive LEDs.
Data input/output pins for the PROM
write and verify (Four low-order bits).
I/O — 4-bit I/O port (PORT5).
Can directly drive LEDs.
Data input/output pins for the PROM
write and verify (Four high-order bits).
I/O — Programmable 4-bit I/O port (PORT6).
I/O can be specified bit by bit.
Suitable for keyboard input.
Output
T13/S12
T12/S13
T11/S14
4-bit P-ch open-drain output port
Can withstand high voltage and
high current (PORTH)
T10/S15
8-bit
I/O
!
!
I/O circuit
When reset type Note
Input
B
F
G
B
Input
B
! Input
E
! Input
Input
E
E
Input
E
! Input
E
! High
impedance
I-D
Note The circle ( ) indicates the Schmitt triggered input.
5
5 Page 
µPD75P216A
3.2 PROM WRITE PROCEDURE
PROM can be written at high speed using the following procedure: (see the following figure)
(1) Pull unused pins to VSS through resistors. Set the X1 pin low.
(2) Supply 5 volts to the VDD and VPP pins.
(3) Wait for 10 µs.
(4) Select the zero clear program memory address mode.
(5) Supply 6 volts to the VDD and 12.5 volts to the VPP pins.
(6) Select the program inhibit mode.
(7) Write data in the 1 ms write mode.
(8) Select the program inhibit mode.
(9) Select the verify mode. If the data is correct, proceed to step (10). If not repeat steps (7), (8) and (9).
(10) Perform one additional write (duration of 1ms × number of writes at (7) to (9)).
(11) Select the program inhibit mode.
(12) Apply four pulses to the X1 pin to increment the program memory address by one.
(13) Repeat steps (7) to (12) until the end address is reached.
(14) Select the zero clear program memory address mode.
(15) Return the VDD and VPP pins back to + 5 volts.
(16) Turn off the power.
Fig. 3-1 Timing of Program Memory Write
X repetition
Write
Verify
Additional write
Address
increment
VPP
VPP
VDD
VDD+1
VDD
VDD
X1
P40-P43
P50-P53
MD0
(P30)
MD1
(P31)
MD2
(P32)
MD3
(P33)
Input data
Output
data
Input data
11
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet UPD75P216A.PDF ] | |
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