參數(shù)資料
型號： UPD75312BGC
廠商： NEC Corp.
英文描述： 4-BIT SINGLE-CHIP MICROCOMPUTER
中文描述： 4位單片機
文件頁數(shù)： 17/77頁
文件大?。?/td> 587K
代理商： UPD75312BGC
17
μ
PD75312B, 75316B
5.
PERIPHERAL HARDWARE FUNCTIONS
5.1
PORTS
I/O Ports has 4 types
CMOS input (PORT0, 1)
CMOS input/output (PORT2, 3, 6, 7) : 16
N-ch open-drain (PORT4, 5)
CMOS output (BP0 to BP7)
Total
: 8
: 8
: 8
40
Port (Symbol)
Function
Operation/Features
Remarks
Table 5-1 Port Function
4-bit input
This port can be used for reading or testing
regardless of the operating mode of the dual-
function pin.
Can be set to 1-bit input or output mode.
PORT1
PORT6
PORT7
PORT2
PORT0
PORT3
*
4-bit input/output
PORT4
*
PORT5
*
Can be set to 4-bit input or output mode. Ports
4 and 5 can be paired for 8-bit data input or
output.
Data output in 1-bit units. It is possible to switch
the output drive segment output S24 to S31
using the software.
Can be set to 4-bit input or output mode. Ports
6 and 7 can be paired for 8-bit data input or
output.
4-bit input/output
(N-ch open-drain,
10-V withstand
voltage)
BP0 to BP7
1-bit output
*
LED can be driven directly.
Dual-function as pins INT4, SCK,
SO/B0, SI/B1.
Dual-function as pins INT0 to INT2 and TI0.
Dual-function as pins LCDCL and SYNC.
Dual-function as pins KR0 to KR3.
Dual-function as pins PTO0, PCL, BUZ.
Dual-function as pins KR4 to KR7.
On-chip pull-up resistor specifiable bit-
wise by mask oftion.
The drive capability is small. For
CMOS load drive.
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