upd17225 Renesas Electronics Corporation., upd17225 Datasheet - Page 8

• Manufacturer Part Number: upd17225
• Description: 4-bit Single-chip Microcontroller For Small General-purpose Infrared Remote Control Transmitter
• Manufacturer: Renesas Electronics Corporation.

1.
1.1
Remark The number in parenthesis in the Pin No. column indicates the pin numbers of the 30-pin plastic SSOP.
8
Pin No.
15 (16)
16 (17)
17 (18)
18 (19)
19 (20)
20 (21)
21 (22)
22 (23)
23 (24)
24 (25)
25 (26)
26 (27)
27 (28)
28 (29)
13 (13)
12 (12)
14 (14)
11 (11)
10 (10)
1 (1)
2 (2)
4 (4)
5 (5)
6 (6)
7 (7)
8 (8)
9 (9)
3 (3)
(15)
(30)
PIN FUNCTIONS
Pin Function List
WDOUT
Symbol
RESET
P0C
P0C
P0C
P0C
P0D
P0D
P0D
P0D
P0A
P0A
P0A
P0A
P0B
P0B
P0B
P0B
P0E
P0E
P0E
P0E
REM
GND
X
V
INT
IC1
IC2
X
OUT
DD
IN
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
Outputs transfer signal for infrared remote controller.
Active-high output.
4-bit CMOS input port with pull-up resistor.
Can be used for key return input of key matrix. When at least
one of these pins goes low, standby function is released.
4-bit CMOS input port with pull-up resistor.
Can be used for key return input of key matrix. When at least
one of these pins goes low, standby function is released.
4-bit N-ch open-drain output port.
Can be used for key source output of key matrix.
4-bit N-ch open-drain output port.
Can be used for key source output of key matrix.
4-bit input/output port.
Can be set in inputset in input or output mode in 1-bit units.
In output mode, this port functions as a high current CMOS output
port. In input mode, function as CMOS input and can be specified
to connect pull-up resistor by program.
System reset input. CPU can be reset when low-level signal is
input to this pin. While low-level signal is input, oscillator is
stopped. Can be connected to pull-up resistor by mask option.
Power supply
Ground
External interrupt request signal input
Output detecting hang-up and drop in supply voltage. This pin
outputs at low level either when an overflow occurs in the watch-
dog timer, when an overflow/underflow occurs in the stack, or
when the supply voltage drops below a specified level (mask
option). Connect this pin to the RESET pin.
Connects ceramic resonator for system clock oscillation
These pins cannot be used.
Leave open.
Data Sheet U12643EJ2V0DS00
Function
PD17225, 17226, 17227, 17228
Output Form
open-drain
open-drain
open-drain
push-pull
push-pull
CMOS
CMOS
N-ch
N-ch
N-ch
–
–
–
–
–
–
–
–
output at low
(Oscillation
impedance
On Reset
Low-level
Low-level
Low-level
Low-level
detection
voltage
stops)
output
output
output
High-
Input
Input
Input
Input
Input
–
–
–