DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD17225, 17226, 17227, 17228
4-BIT SINGLE-CHIP MICROCONTROLLER
FOR SMALL GENERAL-PURPOSE INFRARED
REMOTE CONTROL TRANSMITTER
DESCRIPTION
µ
PD17225, 17226, 17227, 17228 (hereafter called
µ
PD17225 subseries) are 4-bit single-chip microcontrollers for
small general-purpose infrared remote control transmitters.
It employs a 17K architecture of general-purpose register type devices for the CPU, and can directly execute
operations between memories instead of the conventional method of executing operations through the accumulator.
Moreover, all the instructions are 16-bit 1-word instructions which can be programmed efficiently.
In addition, a one-time PROM model,
µ
PD17P218, to which data can be written only once, is also available. It is
convenient either for evaluating the
µ
PD17225 subseries programs or small-scale production of application systems.
Detailed functions are described in the following manual. Be sure to read this manual when designing your
system.
µ
PD172×× Subseries User's Manual: U12795E
FEATURES
• Infrared remote controller carrier generator circuit (REM output)
• 17K architecture: General-purpose register system
• Program memory (ROM), Data memory (RAM)
µ
PD17225
Program memory (ROM)
4 K bytes
(2048
×
16)
Data memory (RAM)
µ
PD17226
8 K bytes
(4096
×
16)
µ
PD17227
12 K bytes
(6144
×
16)
µ
PD17228
16 K bytes
(8192
×
16)
111
×
4 bits
223
×
4 bits
• 8-bit timer
: 1 channel
• Basic internal timer/Watchdog timer : 1 channel (WDOUT output)
• Instruction execution time (can be changed in two steps)
at f
X
= 4 MHz
at f
X
= 8 MHz
• External interrupt pin (INT)
• I/O pins
• Supply voltage
: 4
µ
s (high-speed mode)/8
µ
s (ordinary mode)
: 2
µ
s (high-speed mode)/4
µ
s (ordinary mode)
: 1
: 20
: V
DD
= 2.2 to 3.6 V (at f
X
= 8 MHz (high-speed mode))
V
DD
= 2.0 to 3.6 V (at f
X
= 4 MHz (high-speed mode))
• Low-voltage detector circuit (mask option)
Unless otherwise specified, the
µ
PD17225 is treated as the representative model throughout this document.
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. U12643EJ2V0DS00 (2nd edition)
Date Published April 1999 N CP (K)
Printed in Japan
The mark
shows major revised points.
©
1997,1999
µ
PD17225, 17226, 17227, 17228
APPLICATION
Preset remote controllers, toys, portable systems, etc.
ORDERING INFORMATION
Part Number
Package
28-pin plastic shrink DIP (400 mil)
28-pin plastic SOP (375 mil)
30-pin plastic shrink SOP (300 mil)
28-pin plastic shrink DIP (400 mil)
28-pin plastic SOP (375 mil)
30-pin plastic shrink SOP (300 mil)
28-pin plastic shrink DIP (400 mil)
28-pin plastic SOP (375 mil)
30-pin plastic shrink SOP (300 mil)
28-pin plastic shrink DIP (400 mil)
28-pin plastic SOP (375 mil)
30-pin plastic shrink SOP (300 mil)
µ
PD17225CT-×××
µ
PD17225GT-×××
µ
PD17225MC-×××-5A4
µ
PD17226CT-×××
µ
PD17226GT-×××
µ
PD17226MC-×××-5A4
µ
PD17227CT-×××
µ
PD17227GT-×××
µ
PD17227MC-×××-5A4
µ
PD17228CT-×××
µ
PD17228GT-×××
µ
PD17228MC-×××-5A4
Remark
×××
indicates ROM code suffix.
DIFFERENCE BETWEEN
µ
PD17225 SUBSERIES AND
µ
PD17215 SUBSERIES
Item
Supply Voltage
Instruction Execution
Time (t
CY
)
µ
PD17225 Subseries
V
DD
= 2.0 to 3.6 V
2
µ
s (V
DD
= 2.2 to 3.6 V)
4
µ
s (V
DD
= 2.0 to 3.6 V)
Connected to RESET pin or V
DD
via
resistor (when not used)
µ
PD17215 Subseries
V
DD
= 2.0 to 5.5 V
2
µ
s (V
DD
= 3.5 to 5.5 V)
4
µ
s (V
DD
= 2.2 to 5.5 V)
8
µ
s (V
DD
= 2.0 to 5.5 V)
Connected to RESET pin or GND (when not
used)
WDOUT Pin
Connection of WDOUT pin differs between
µ
PD17P218 and
µ
PD17225, 17226, 17227, and
17228 when OTP is evaluated on
µ
PD17225 subseries board and when WDOUT pin is not
used. When
µ
PD17P218 is used, malfunctioning does not occur even when WDOUT pin is
pulled up, though connection can be changed by using a jumper switch on the external board.
Others
Supply voltage, low-voltage detection voltage, oscillator characteristics, and noise characteris-
tics differ.
Although
µ
PD17P218 is used as one-time PROM for evaluation for both subseries,
µ
PD17P218 cannot be used to evaluate the low-voltage high-speed operation of the
µ
PD17225
subseries.
2
Data Sheet U12643EJ2V0DS00
µ
PD17225, 17226, 17227, 17228
PIN CONFIGURATION (TOP VIEW)
• 28-pin plastic SOP (375 mil)
µ
PD17225GT-×××, 17226GT-×××, 17227GT-×××, 17228GT-×××
• 28-pin plastic shrink DIP (400 mil)
µ
PD17225CT-×××, 17226CT-×××, 17227CT-×××, 17228CT-×××
P0D
2
P0D
3
INT
P0E
0
P0E
1
P0E
2
P0E
3
REM
V
DD
X
OUT
X
IN
GND
RESET
WDOUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
P0D
1
P0D
0
P0C
3
P0C
2
P0C
1
P0C
0
P0B
3
P0B
2
P0B
1
P0B
0
P0A
3
P0A
2
P0A
1
P0A
0
Data Sheet U12643EJ2V0DS00
3
µ
PD17225, 17226, 17227, 17228
• 30-pin plastic shrink SOP (300 mil)
µ
PD17225MC-×××-5A4,
µ
PD17226MC-×××-5A4,
µ
PD17227MC-×××-5A4,
µ
PD17228MC-×××-5A4
P0D
2
P0D
3
INT
P0E
0
P0E
1
P0E
2
P0E
3
REM
V
DD
X
OUT
X
IN
GND
RESET
WDOUT
IC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
IC2
P0D
1
P0D
0
P0C
3
P0C
2
P0C
1
P0C
0
P0B
3
P0B
2
P0B
1
P0B
0
P0A
3
P0A
2
P0A
1
P0A
0
GND
IC1, IC2
INT
: Ground
: Internally connected
: External interrupt request signal input
P0A
0
-P0A
3
: Input port (CMOS input)
P0B
0
-P0B
3
: Input port (CMOS input)
P0C
0
-P0C
3
: Output port (N-ch open-drain output)
P0D
0
-P0D
3
: Output port (N-ch open-drain output)
P0E
0
-P0E
3
: I/O port (CMOS push-pull output)
REM
RESET
V
DD
WDOUT
X
IN
, X
OUT
: Remote controller output (CMOS push-pull output)
: Reset input
: Power supply
: Hang-up/low voltage detection output (N-ch open-drain output)
: Resonator connection
4
Data Sheet U12643EJ2V0DS00
µ
PD17225, 17226, 17227, 17228
BLOCK DIAGRAM
P0A
0
P0A
1
P0A
2
P0A
3
RAM
µ
PD17225, 17226 : 111
×
4 bits
µ
PD17227, 17228 : 223
×
4 bits
P0B
0
P0B
1
P0B
2
P0B
3
SYSTEM REG.
P0A
RF
Remote
Control
Divider
REM
8-bit Timer
P0B
Interrupt
Controller
ALU
INT
P0C
0
P0C
1
P0C
2
P0C
3
P0C
ROM
µ
PD17225 : 2048
µ
PD17226 : 4096
µ
PD17227 : 6144
µ
PD17228 : 8192
×
×
×
×
16 bits
16 bits
16 bits
16 bits
Instruction
Decoder
P0D
0
P0D
1
P0D
2
P0D
3
P0D
RESET
WDOUT
Program Counter
P0E
0
P0E
1
P0E
2
P0E
3
P0E
Stack (5 levels)
Power
Supply
Circuit
CPU Clock
V
DD
GND
Basic Interval/
Watchdog Timer
X
IN
OSC
X
OUT
Data Sheet U12643EJ2V0DS00
5
京公网安备 11010802033920号
EEWORLD
