DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD6P4B
4-BIT SINGLE-CHIP MICROCONTROLLER
FOR INFRARED REMOTE CONTROL TRANSMISSION
DESCRIPTION
The
µ
PD6P4B is a microcontroller for infrared remote control transmitters which is provided with a one-time
PROM as the program memory.
Because users can write programs for the
µ
PD6P4B, it is ideal for program evaluation and small-scale production
of the application systems using the
µ
PD62, 63, 63A, or 64.
When reading this document, also refer to the
µ
PD62 Data Sheet (U14208E) and the
µ
PD63, 63A, 64 Data
Sheet (U11371E).
FEATURES
• Program memory (one-time PROM) : 1002
×
10 bits
• Data memory (RAM)
• 9-bit programmable timer
• Command execution time
• Stack level
• I/O pins (K
I/O
)
• Input pins (K
I
)
• Sense input pin (S
0
)
• S
1
/LED pin (I/O)
• Power supply voltage
• Operating ambient temperature
• Oscillator frequency
• POC circuit
: 32
×
4 bits
: 1 channel
: 16
µ
s (when operating at f
X
= 4 MHz: ceramic oscillation)
: 1 level (Stack RAM is for data memory RF as well.)
: 8 units
: 4 units
: 1 unit
: 1 unit (In output mode, this is the remote control transmission display
pin.)
: V
DD
= 2.2 to 3.6 V (at f
X
= 4 MHz)
V
DD
= 2.7 to 3.6 V (at f
X
= 8 MHz)
: T
A
= –40 to +85
°C
: f
X
= 2.4 to 8 MHz
• Built-in carrier generation circuit for infrared remote control
APPLICATION
Infrared remote control transmitter (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 devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. U13594EJ2V0DS00 (2nd edition)
Date Published May 1999 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1998,1999
µ
PD6P4B
ORDERING INFORMATION
Part Number
Package
20-pin plastic SOP (300 mil)
20-pin plastic SSOP (300 mil)
µ
PD6P4BGS
µ
PD6P4BMC-5A4
PIN CONFIGURATION (TOP VIEW)
20-pin Plastic SOP (300 mil)
•
µ
PD6P4BGS
20-pin Plastic SSOP (300 mil)
•
µ
PD6P4BMC-5A4
(1) Normal operating mode
K
I/O6
K
I/O7
S
0
S
1
/LED
REM
V
DD
X
OUT
X
IN
GND
RESET
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
K
I/O5
K
I/O4
K
I/O3
K
I/O2
K
I/O1
K
I/O0
K
I3
K
I2
K
I1
K
I0
2
Data Sheet U13594EJ2V0DS00
µ
PD6P4B
(2)
PROM programming mode
D
6
D
7
CLK
(L)
1
2
3
4
5
20
19
18
17
16
15
14
13
12
11
D
5
D
4
D
3
D
2
D
1
D
0
MD
3
MD
2
MD
1
MD
0
V
DD
X
OUT
X
IN
GND
V
PP
6
7
8
9
10
Caution Round brackets ( ) indicate the pins not used in the PROM programming mode.
L : Connect each of these pins to GND via a pull-down resistor.
BLOCK DIAGRAM
REM
CARRIER
GENERATOR
4
CPU
CORE
ONE-
TIME
PROM
PORT K
I
4
K
I0
-K
I3
8
PORT K
I/O
8
K
I/O0
-K
I/O7
S
1
/LED
9-bit
TIMER
2
PORT S
2
S
0
, S
1
/LED
RAM
RESET
SYSTEM
CONTROL
X
IN
X
OUT
V
DD
GND
Data Sheet U13594EJ2V0DS00
3
µ
PD6P4B
LIST OF FUNCTIONS
Item
ROM capacity
1002
×
10 bits
One-time PROM
RAM capacity
Stack
I/O pin
32
×
4 bits
1 level (shared with RF of RAM)
Key input (K
I
)
Key I/O (K
I/O
)
Key expansion input (S
0
, S
1
)
Remote control transmitter display output (LED)
Number of keys
32 keys
48 keys (when expanded by key expansion input)
96 keys (when expanded by key expansion input and diode)
Clock frequency
Ceramic oscillation
f
X
= 2.4 to 4 MHz
f
X
= 4 to 8 MHz
Note
Instruction execution time
Carrier frequency
Timer
POC circuit
Supply voltage
Operating ambient
temperature
Package
16
µ
s (at f
X
= 4 MHz)
f
X
/8, f
X
/16, f
X
/64, f
X
/96, f
X
/128, f
X
/192, no carrier (high level)
9-bit programmable timer
Provided
V
DD
= 2.2 to 3.6 V (f
X
= 2.4 to 4 MHz), V
DD
= 2.7 to 3.6 V (f
X
= 4 to 8 MHz)
• T
A
= –40 to +85
°C
• T
A
= –20 to +70
°C
(when using POC circuit)
• 20-pin plastic SOP (300 mil)
• 20-pin plastic SSOP (300 mil)
: 1 channel
: 4 pins
: 8 pins
: 2 pins
: 1 pin (shared with S
1
pin)
µ
PD6P4B
Note
It is necessary to design the application circuit so that the RESET pin goes low at a supply voltage of less
than 2.7 V.
4
Data Sheet U13594EJ2V0DS00
µ
PD6P4B
TABLE OF CONTENTS
1. PIN FUNCTIONS .........................................................................................................................
1.1
1.2
1.3
1.4
1.5
Normal Operating Mode ....................................................................................................................
PROM Programming Mode ...............................................................................................................
INPUT/OUTPUT Circuits of Pins ......................................................................................................
Dealing with Unused Pins ................................................................................................................
Notes on Using K
I
Pin at Reset ........................................................................................................
6
6
7
8
9
9
2. DIFFERENCES AMONG
µ
PD62, 63, 63A, 64, AND
µ
PD6P4B ................................................. 10
2.1
Program Memory (One-time PROM) ................................................................................................ 11
3. WRITING AND VERIFYING ONE-TIME PROM (PROGRAM MEMORY) .................................. 12
3.1
3.2
3.3
Operating Mode When Writing/Verifying Program Memory .......................................................... 12
Program Memory Writing Procedure .............................................................................................. 13
Program Memory Reading Procedure ............................................................................................. 14
4. ELECTRICAL SPECIFICATIONS ............................................................................................... 15
5. CHARACTERISTIC CURVE (REFERENCE VALUES) .............................................................. 21
6. APPLIED CIRCUIT EXAMPLE ................................................................................................... 23
7. PACKAGE DRAWINGS .............................................................................................................. 24
8. RECOMMENDED SOLDERING CONDITIONS .......................................................................... 26
APPENDIX A. DEVELOPMENT TOOLS ........................................................................................ 27
APPENDIX B. EXAMPLE OF REMOTE-CONTROL TRANSMISSION FORMAT .......................... 28
Data Sheet U13594EJ2V0DS00
5
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