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PDF UPD6P8 Data sheet ( Hoja de datos )
| Número de pieza | UPD6P8 | |
| Descripción | MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD6P8, 6P8A, 6P8B
4-BIT SINGLE-CHIP MICROCONTROLLER
FOR INFRARED REMOTE CONTROL TRANSMISSION
DESCRIPTION
The µPD6P8, 6P8A, 6P8B are microcontrollers for infrared remote control transmitters and are provided with
a one-time PROM as the program memory.
Because users can write programs for the µPD6P8, 6P8A, 6P8B, They are ideal for program evaluation and small-
scale production of application systems that use the µPD67A, 67B, 68A, 68B.
When reading this document, also refer to the following documents.
µPD67, 67A, 68, 68A, 69 Data Sheet: U14935E
µPD67B, 68B Data Sheet:
U16792E
FEATURES
• Program memory (one-time PROM):
2026 × 10 bits
• Data memory (RAM):
32 × 4 bits
• On-chip carrier generator for infrared remote control: The high-level and low-level width can be set separately
from 250 ns to 64 µs (@ fX = 4 MHz operation) via modulo
registers
• 9-bit programmable timer:
1 channel
• Instruction execution time:
16 µs (@ fX = 4 MHz)
• Stack level:
1 level (stack RAM is for data memory RF as well)
• I/O pins (KI/O):
8 units
• Input pins (KI):
4 units
www.DataSheet4U•.coSmense input pins (S0, S2):
• S1/LED pin (I/O):
2 units
1 unit (when in output mode, this is the remote control
transmission display pin)
• Power supply voltage:
VDD = 1.9 to 3.6 V
• Operating ambient temperature:
TA = –40 to +85°C
• Oscillator frequency:
fX = 3.5 to 4.5 MHz
• On-chip POC circuit and RAM retention detector
• On-chip oscillator (µPD6P8B)
APPLICATIONS
Infrared remote control transmitters (for AV and household electric appliances)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. U17848EJ3V0DS00 (3rd edition)
Date Published December 2007 N
Printed in Japan
The mark <R> shows major revised points.
2006
1 page  
BLOCK DIAGRAM
REM
Carrier
generator
S1/LED
9-bit
timer
µPD6P8, 6P8A, 6P8B
CPU
core
One-
time
PROM
4 Port KI 4 KI0 to KI3
8 Port KI/O 8 KI/O0 to KI/O7
3 Port S 3 S0, S1/LED, S2
LIST OF FUNCTIONS
Item
ROM capacity
RAM capacity
Stack
I/O pins
Number of keys
Clock frequency
www.DataSheet4UIn.csotrmuction execution time
Carrier frequency
Timer
POC circuit
RAM retention detector
Internal oscillator
Programming method
Supply voltage
Operating ambient
temperature
Package
RAM
System
control
XIN
XOUT
VDD
GND
µPD6P8
µPD6P8A
µPD6P8B
2026 × 10 bits
One-time PROM
32 × 4 bits
1 level (shared with RF of RAM)
Key input (KI):
Key I/O (KI/O):
Key expansion input (S0, S1, S2):
Remote control transmission display output (LED):
4 pins
8 pins
3 pins
1 pin (shared with S1 pin)
32 keys
56 keys (when expanded by key expansion input)
Ceramic oscillation
fX = 3.5 to 4.5 MHz
16 µs (@ fX = 4 MHz)
The high-level and low-level width can be set separately from 250 ns to 64 µs (@ fX = 4 MHz
operation) via modulo registers
9-bit programmable timer: 1 channel, timer clock: fX/64
On chip
On chip
Not available
On chip
Parallel
Serial
VDD = 1.9 to 3.6 V
TA = –40 to +85°C
20-pin plastic SSOP (7.62 mm (300))
Data Sheet U17848EJ3V0DS
5
5 Page 
µPD6P8, 6P8A, 6P8B
1.3 Pins I/O Circuits
The I/O circuits of the µPD6P8, 6P8A, 6P8B pins are shown in partially simplified forms below.
(1) KI/O0 to KI/O7
(4) S0
Data
Output
latch
Output
disable
VDD Input buffer
Input buffer
P-ch
N-chNote 1
Standby
release
OFF mode
Pull-down flag
N-ch
(2) KI0 to KI3
Standby
release
Input buffer
Pull-down flag
N-ch
(5) S1/LED
N-ch
REM
output latch
Output
disable
Standby
release
VDD
P-ch
N-ch
Input buffer
www.DataSheet4U.com
(3) REM
Data
Output
latch
Carrier
generator
VDD
P-ch
N-ch
Pull-down flag
(6) S2, S3Note 2
Standby
release
Input buffer
N-ch
STOP release
ON/OFF
N-ch
Notes 1. The drive capability is held low.
2. µPD6P8B only
Data Sheet U17848EJ3V0DS
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet UPD6P8.PDF ] | |
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