參數(shù)資料
型號: UPD75116A
廠商: NEC Corp.
英文描述: 4-Bit Single Chip-Microcomputer
中文描述: 4位單片微機(jī)
文件頁數(shù): 14/56頁
文件大小: 499K
代理商: UPD75116A
14
μ
PD75112(A), 75116(A)
Table 5-1 Functions of Digital Ports
Remarks
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.
5. Peripheral Hardware Functions
5.1 Digital Input/Output Port
The digital input/output port has the following tree types.
CMOS input (PORT0, 1)
CMOS input/output (PORT 2 to PORT 9)
N-ch open-drain input/output (PORT 12 to PORT 14): 12
:
: 32
8
Total
52
Functions
4-bit input
4-bit input/
output
4-bit input/
output
(N-ch open-
drain, 12 V
withstand
voltage)
Port (Code)
PORT0
PORT1
PORT3
PORT6
PORT2
PORT4
PORT5
PORT7
PORT8
PORT9
PORT12
PORT13
PORT14
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.
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.
0.95
μ
s/1.91
μ
s/15.3
μ
s (at 4.19 MHz operation)
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