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PDF UPD75308BGK Data sheet ( Hoja de datos )

Número de pieza UPD75308BGK
Descripción 4-BIT SINGLE-CHIP MICROCOMPUTER
Fabricantes NEC 
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75304B,75306B,75308B
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD75308B 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 µPD75308 with on-chip LCD controller/driver. Operation at an
ultra-low voltage of 2.0 V is possible. An ultra small-sized plastic QFP (12 × 12 mm) is also provided and it is
perfect for small-sized set that uses an LCD panel.
Functions, etc., are described in detail in the User's Manual. Please be sure to read this manual when
carrying out design work.
µPD75308 User's Manual: IEM-5016
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) : 8064 × 8 bit (µPD75308B)
: 6016 × 8 bit (µPD75306B)
: 4096 × 8 bit (µPD75304B)
• Data memory (RAM)
: 512 × 4 bit
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 operation)
• 122 µs (32.768 kHz operation)
Built-in programmable LCD controller/driver
• LCD drive voltage: 2.0 V to VDD
An ultra small-sized plastic QFP (12 × 12 mm) is provided.
• Suitable for small-sized set, such as a camera.
On-chip PROM products available
• On-chip one-time PROM products : µPD75P308, 75P316A
• On-chip EPROM products
: µPD75P308, 75P316B
APPLICATIONS
Remote control, integrated camera type VCR, camera, gas meter, etc.
Unless there are any particular functional differences, the µPD75308B is described in this document as a
representative product.
Document No. IC-2913C
(O. D. No. IC-8082D)
Date Published January 1994 P
Printed in Japan
The information in this document is subject to change without notice.
The mark 5 shows major revised points.
© NEC Corporation 1991

1 page




UPD75308BGK pdf
µPD75304B,75306B,75308B
CONTENTS
1. PIN CONFIGURATION (TOP VIEW)...............................................................................................
6
2. BLOCK DIAGRAM............................................................................................................................ 8
3. PIN FUNCTIONS ..............................................................................................................................
3.1 PORT PINS ..............................................................................................................................................
3.2 NON-PORT PINS .....................................................................................................................................
3.3 PIN INPUT/OUTPUT CIRCUITS ..............................................................................................................
3.4 RECOMMENDED CONNECTION OF UNUSED PINS .............................................................................
3.5 PRECAUTIONS CONCERNING P00/INT4 PIN AND RESET PIN ...........................................................
9
9
11
13
15
16
4. MEMORY CONFIGURATION .......................................................................................................... 16
5. PERIPHERAL HARDWARE FUNCTIONS ........................................................................................
5.1 PORTS .....................................................................................................................................................
5.2 CLOCK GENERATOR ...............................................................................................................................
5.3 CLOCK OUTPUT CIRCUIT .......................................................................................................................
5.4 BASIC INTERVAL TIMER ........................................................................................................................
5.5 WATCH TIMER ........................................................................................................................................
5.6 TIMER/EVENT COUNTER .......................................................................................................................
5.7 SERIAL INTERFACE .................................................................................................................................
5.8 LCD CONTROLLER/DRIVER ....................................................................................................................
5.9 BIT SEQUENTIAL BUFFER ......................................................................................................................
21
21
22
23
24
25
26
28
30
32
6. INTERRUPT FUNCTION ................................................................................................................. 32
7. STANDBY FUNCTION .................................................................................................................... 34
8. RESET FUNCTION .......................................................................................................................... 35
9. INSTRUCTION SET ......................................................................................................................... 37
10. MASK OPTION SELECTION ............................................................................................................ 45
11. ELECTRICAL SPECIFICATIONS ...................................................................................................... 46
12. PACKAGE INFORMATION .............................................................................................................. 64
13. RECOMMENDED SOLDERING CONDITIONS ................................................................................ 67
APPENDIX A. DIFFERENCES AMONG SERIES PRODUCTS .............................................................. 70
APPENDIX B. DEVELOPMENT TOOLS ............................................................................................... 72
APPENDIX C. RELATED DOCUMENTS .............................................................................................. 73
5

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UPD75308BGK arduino
µPD75304B,75306B,75308B
3.2 NON-PORT PINS
Pin Name
TI0
PTO0
PCL
BUZ
SCK
SO/SB0
Input/Output
Input
Input/output
Input/output
Input/output
Input/output
Input/output
SI/SB1
Input/output
INT4
Input
INT0
INT1
Input
INT2
Input
KR0 to KR3 Input/output
KR4 to KR7 Input/output
S0 to S23
Output
S24 to S31
Output
COM0 to COM3
Output
VLC0 to VLC2
BIAS
LCDCL *4
Output
Input/output
SYNC *4
Input/output
X1, X2
Input
XT1
XT2
RESET
NC *5
VDD
VSS
Input
Input
Dual-
Function Pin
Function
P13 External event pulse input pin to timer/event counter
P20 Timer/event counter output pin
P22 Clock output pin
Fixed frequency output pin (for buzzer or system clock
P23 trimming)
P01 Serial clock input/output pin
Serial data output pin
P02 Serial bus input/output pin
P03
Serial data input pin
Serial bus input/output pin
P00
Edge detection vectored interrupt input pin (both rising
edge and falling edge detection effective)
P10
Edge detection vectored
interrupt input pin (detection
Clock synchronous
system
edge selectable)
P11
Asynchronous
P12
Edge detection testable input
pin (rising edge detection)
Asynchronous
P60 to P63 Parallel falling edge detection testable input pin
P70 to P73 Parallel falling edge detection testable input pin
— Segment signal output pin
BP0 to BP7 Segment signal output pin
— Common signal output pin
LCD drive power supply pin
On-chip split resistor (mask option)
— External split resistor cut output pin
P30 External expansion driver drive clock output pin
P31
External expansion driver synchronization clock output
pin
Main system clock oscillation crystal/ceramic connection
— pin. For external clock, the external clock signal is input
to X1 and its opposite phase is input to X2.
Subsystem clock oscillation crystal connection pin. For
external clock, the external clock signal is input to XT1
and XT2 is opened. XT1 can be used as a 1-bit input
— (test) pin.
System reset input pin
— NO CONNECTION
— Positive power supply pin
— GND potential pin
After
Reset
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
*2
*2
*2
*3
Input
Input
* 1. : Schmitt trigger input
2. Display outputs are selected with VLCX shown below as the input source.
S0 to S31: VLC1, COM0 to COM2: VLC2, COM3: VLC0
However, the level of each display output depends on the display output and VLCX external circuit.
I/O Circuit
Type *1
B -C
E-B
E-B
E-B
F -A
F -B
M -C
B
B -C
B -C
F -A
F -A
G-A
G-C
G-B
E-B
E-B
B
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