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What is UPD75312BGC?

This electronic component, produced by the manufacturer "NEC", performs the same function as "4-BIT SINGLE-CHIP MICROCOMPUTER".


UPD75312BGC Datasheet PDF - NEC

Part Number UPD75312BGC
Description 4-BIT SINGLE-CHIP MICROCOMPUTER
Manufacturers NEC 
Logo NEC Logo 


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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75312B, 75316B
4-BIT SINGLE-CHIP MICROCOMPUTER
The µPD75316B is a 75X Series 4-bit single-chip microcomputer capable of the same data processing as an 8-
bit microcomputer.
It is a low-voltage operation version of the µPD75316 with an on-chip LCD controller/driver. Operation at an ultra-
low voltage of 2.0 V is possible. An ultra small-sized plastic TQFP (12 x 12 mm) is also provided and it is suitable
for small-sized sets that use an LCD panel.
A detailed explanation of the functions will be given in the user's manual listed below. It should be read before
starting design work.
µPD75308 User's Manual: IEM-1263
FEATURES
Ultra-low-voltage operation possible: VDD = 2.0 to 6.0 V
• Can be driven by two 1.5-V manganese batteries.
On-chip memory
• Program memory (ROM)
: 16256 × 8 bits (µPD75316B)
: 12160 × 8 bits (µPD75312B)
• Data memory (RAM)
: 1024 × 4 bits
Instruction execution time adjustment function
convenient in high-speed operation and power
saving
• 0.95 µs, 1.91 µs, 15.3 µs (@ 4.19 MHz)
• 122 µs (@ 32.768 kHz)
On-chip programmable LCD controller/driver
• LCD drive voltage: 2.0 V to VDD
Ultra small-sized plastic TQFP (12 x 12 mm)
• Suitable for small-sized set, such as a camera.
PROM version µPD75P316B also available.
APPLICATIONS
Remote control, camcorder, camera, gas meter, etc.
ORDERING INFORMATION
Part number
Package
µPD75312BGC-×××-3B9 80-pin plastic QFP (14 x 14 mm)
µPD75312BGK-×××-BE9 80-pin plastic TQFP (Fine pitch) (12 x 12 mm)
µPD75316BGC-×××-3B9 80-pin plastic QFP (14 x 14 mm)
µPD75316BGK-×××-BE9 80-pin plastic TQFP (Fine pitch) (12 x 12 mm)
Remark ×××: ROM code suffix
Unless stated otherwise, the explanations in this document will use the µPD75316B as a representative part.
The information in this document is subject to change without notice.
Document No. IC-3196A
(O. D. No. IC-8698A)
Date Published December 1994 P
Printed in Japan
© NEC Corporation 1993

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UPD75312BGC equivalent
1. PIN CONFIGURATION (TOP VIEW)
µPD75312B, 75316B
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24/BP0
S25/BP1
S26/BP2
S27/BP3
S28/BP4
S29/BP5
S30/BP6
S31/BP7
1 80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
2 59
3 58
4 57
5 56
6 55
7 54
8 53
9 52
10 51
11 50
12 49
13 48
14 47
15 46
16 45
17 44
18 43
19 42
20 41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
P60/KR0
X2
X1
IC*
XT2
XT1
VDD
P33
P32
P31/SYNC
P30/LCDCL
P23/BUZ
P22/PCL
P21
P20/PTO0
P13/TI0
P12/INT2
P11/INT1
P10/INT0
P03/SI/SB1
* IC (Internally Connected) pin should be directly connected to VDD.
P00 to 03
P10 to 13
P20 to 23
P30 to 33
P40 to 43
P50 to 53
P60 to 63
P70 to 73
BP0 to 7
KR0 to 7
SCK
SI
SO
SB0,1
RESET
: Port 0
: Port 1
: Port 2
: Port 3
: Port 4
: Port 5
: Port 6
: Port 7
: Bit Port
: Key Return
: Serial Clock
: Serial Input
: Serial Output
: Serial Bus 0, 1
: Reset Input
S0 to 31
COM0 to 3
VLC0-2
BIAS
LCDCL
SYNC
TI0
PTO0
BUZ
PCL
INT0, 1, 4
INT2
X1, 2
XT1, 2
IC
: Segment Output 0 to 31
: Common Output 0 to 3
: LCD Power Supply 0 to 2
: LCD Power Supply Bias Control
: LCD Clock
: LCD Synchronization
: Timer Input 0
: Programmable Timer Output 0
: Buzzer Clock
: Programmable Clock
: External Vectored Interrupt 0, 1, 4
: External Test Input 2
: Main System Clock Oscillation 1, 2
: Subsystem Clock Oscillation 1, 2
: Internally Connected
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UPD75312BGC electronic component.


Information Total 30 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
UPD75312BGCThe function is 4-BIT SINGLE-CHIP MICROCOMPUTER. NECNEC
UPD75312BGKThe function is 4-BIT SINGLE-CHIP MICROCOMPUTER. NECNEC

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