upd75212a Renesas Electronics Corporation., upd75212a Datasheet - Page 10

• Manufacturer Part Number: upd75212a
• Description: 4-bit Single-chip Microcomputer
• Manufacturer: Renesas Electronics Corporation.

10
3.2
* Schmitt-triggered inputs are circled.
SO
BUZ
X1, X2
XT1
XT2
RESET
V
V
V
T0 to T9
T10/S15 to
T13/S12
T14/S11,
T15/S10
S9
S0 to S8
PPO
TI0
SCK
SI
INT4
INT0
INT1
INT2
V
Pin Name
PRE
LOAD
DD
SS
NON-PORT PINS
Input/output
Input/output
Input/output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
–––
I/O
Function Pin
PH3 to PH0
Dual-
P13
P01
P02
P03
P00
P10
P11
P12
P23
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
FIP controller/
driver output
pins.
Pull-down
resistor can be
incorporated in
bit-wise (mask
option).
Timer/pulse generator pulse output.
External event pulse input for timer/event counter.
Serial clock input/output.
Serial data output pin or serial data input/output.
Serial data input or normal input.
Edge-detected vectored interrupt input (rising and falling
edge detection).
Edge-detected vectored interrupt input with noise
elimination function (detection edge selection possible).
Edge-detected testable input (rising edge detection).
Fixed frequency output (for buzzer or system clock
trimming).
Crystal/ceramic connect pin for main system clock
oscillation.
External clock input to X1 and its inverted clock input to
X2.
Crystal connect pin for subsystem clock oscillation.
External clock input to XT1 and XT2 open.
System reset input (low level active).
FIP controller/driver output buffer power supply.
FIP controller/driver pull-down resistor connect pin.
Positive power supply.
GND potential.
Segment high-voltage output.
Digit output high-voltage high-current
output.
Digit/segment output dual-function
high-voltage high-current output.
Extra pins can be used as PORTH.
Digit/segment output dual-function
high-voltage high-current output.
Static output also possible.
Segment output high-voltage output.
Static output also possible.
Function
Low level
(With an on-
chip pull-
down
resistor) or
high
impedance
(without a
pull-down
resistor)
After Reset
High
impedance
Input
Input
Input
Input
PD75212A
Input / Output
Circuit Type *
D
B
G
B
B
B
B
F
E
B
I
I
I