D75116GF NEC, D75116GF Datasheet - Page 14

• Manufacturer Part Number: D75116GF
• Description: Search -----> UPD75116GF
• Manufacturer: NEC

14
5. Peripheral Hardware Functions
5.1 Digital Input/Output Port
The digital input/output port has the following tree types.
Table 5-1 Functions of Digital Ports
5.2 Clock Generator
The clock generator is a circuit which supplies the CPU
and peripheral hardware with various clocks and con-
trols the CPU operating mode.
The instruction execution time can be changed.
Port (Code)
0.95 s/1.91 s/15.3 s (at 4.19 MHz operation)
PD75112(A), 75116(A)
PORT12
PORT13
PORT14
PORT0
PORT1
PORT3
PORT6
PORT2
PORT4
PORT5
PORT7
PORT8
PORT9
CMOS input (PORT0, 1)
CMOS input/output (PORT 2 to PORT 9)
N-ch open-drain input/output (PORT 12 to PORT 14): 12
4-bit input
4-bit input/
output
4-bit input/
output
(N-ch open-
drain, 12 V
withstand
voltage)
Functions
Read or test always enable irrespectively of the operating mode
of dual-function pins.
Can be set bit-wise to the input or output mode.
Can be set in 4-bit units to the input or output mode.
Ports 4 and 5, 6 and 7, 8 and 9 can form pairs and data can be
input/output in 8-bit units.
Can be set in 4-bit units the input or output mode.
Ports 12 and 13 can form a pair and data can be input/output in 8-
bit units.
Operations and Features
Total
:
: 32
52
8
Share the pins with SI, SO, SCK and
INT0 to 4.
Port 2 shares the pin with PTO0,
PTO1 and PCL.
On-chip pull-up registers can be
specified bit-wise by mask option.
Remarks