參數(shù)資料
型號(hào)： UPD75316GF
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 20/62頁(yè)
文件大小： 577K
代理商： UPD75316GF
μ
PD75312(A), 75316(A)
20
5.
PERIPHERAL HARDWARE FUNCTIONS
5.1
PORTS
I/O ports are classified into the following 4 kinds:
CMOS input (PORT0, 1)
CMOS input/output (PORT2, 3, 6, 7)
N-ch open-drain (PORT4, 5)
CMOS output (BP0-BP7)
Total
:
: 16
:
: 8
: 40
8
8
Port Name
PORT0
PORT1
PORT2
PORT7
PORT3
PORT6
PORT4
PORT5
BP0-BP7
Function
4-bit input
4-bit Input/Output
4-bit Input/Output
(N-ch open-drain,
10 V)
1-bit output
Operation and Feature
Can be always read or tested regardless of opera-
tion mode of multiplexed pin.
Can be set in input or output mode in 4-bit units.
Ports 6 and 7 are used in pairs to input/output data
in 8-bit units.
Can be set in input or output mode in 1-bit units.
Can be set in input or output mode in 4-bit units.
Ports 4 and 5 are used in pairs to input/output data
in 8-bit units.
Output data in 1-bit units. Can be used as LCD drive
segment output pins S24-S31 through software.
Remarks
Multiplexed with INT4,
SCK, SO/SB0, and SI/SB1
Multiplexed with INT0-
INT2 and TI0
Multiplexed with PTO0,
PCL, and BUZ
Multiplexed with KR4-KR7
Multiplexed with LCDCL
and SYNC
Multiplexed with KR0-KR3
Can be connected to a
pull-up resistor in 1-bit
units by using mask
option.
Low drive capability
For driving CMOS load
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