UPD754264GS Datasheet PDF - NEC
| Part Number | UPD754264GS | |
| Description | 4-BIT SINGLE-CHIP MICROCONTROLLERS | |
| Manufacturers | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD754264
4-BIT SINGLE-CHIP MICROCONTROLLERS
DESCRIPTION
The µPD754264 is a 4-bit single-chip microcontroller which incorporates the EEPROMTM for key-less entry
application.
It incorporates a 32 × 8-bit EEPROM, a CPU performing operation, a 4-Kbyte mask ROM to store software,
a 128 × 4-bit RAM to store the operation data, an 8-bit resolution A/D converter, and a carrier generator which
easily outputs waveforms for infrared remote controller.
The details of functions are described in the following user’s manual. Be sure to read it before designing.
µPD754264 User’s Manual: U12287E
FEATURES
• On-chip EEPROM: 32 × 8 bits (mapped to the data memory)
• On-chip key return reset function for key-less entry
• On-chip low-voltage A/D converter (AVREF = 1.8 to 6.0 V), 8-bit resolution × 2 channels
• Low-voltage operation: VDD = 1.8 to 6.0 V
• Timer function (4 channels)
• Basic interval timer/watchdog timer : 1 channel
• 8-bit timer counter
: 3 channels
• On-chip memory
• Program memory (ROM)
4096 × 8 bits
• Data memory (static RAM)
128 × 4 bits
• Instruction execution time variable function suited for high-speed operation and power saving.
0.95, 1.91, 3.81, 15.3 µs (@ fX = 4.19-MHz operation)
0.67, 1.33, 2.67, 10.7 µs (@ fX = 6.0-MHz operation)
APPLICATIONS
Automotive appliances such as key-less entry, compact data carrier, etc.
ORDERING INFORMATION
Part Number
µPD754264GS-×××-BA5
Package
20-pin plastic SOP (300 mil, 1.27-mm pitch)
Remark ××× indicates ROM code suffix.
Document No. U12487EJ1V1DS00
Date Published January 1999 N CP(K)
Printed in Japan
The information in this document is subject to change without notice.
The mark shows major revised points.
©
1997
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µPD754264
1. PIN CONFIGURATION (TOP VIEW)
• 20-pin Plastic SOP (300 mil, 1.27-mm pitch)
µPD754264GS-×××-BA5
RESET
X1
X2
VSS
IC
VDD
P60/AVREF
P61/INT0
P62/AN0
P63/AN1
1
2
3
4
5
6
7
8
9
10
20 KRREN
19 P80
18 P30/PTO0
17 P31/PTO1
16 P32/PTO2
15 P33
14 P70/KR4
13 P71/KR5
12 P72/KR6
11 P73/KR7
IC: Internally Connected (Connect to VDD directly)
Pin Identification
AN0, AN1
AVREF
IC
INT0
KR4 to KR7
KRREN
P30 to P33
P60 to P63
: Analog input 0,1
: Analog reference
: Internally connected
: External vectored interrupt 0
: Key returns 4 to 7
: Key return reset enable
: Port 3
: Port 6
P70 to P73
: Port 7
P80 : Port 8
PTO0 to PTO2 : Programmable timer outputs 0 to 2
RESET
: Reset
VDD : Positive power supply
VSS : Ground
X1 and X2
: System clock (crystal/ceramic)
5
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| Information | Total 68 Pages | |
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| Download | [ UPD754264GS.PDF Datasheet ] | |
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