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參數(shù)資料
| 型號(hào)： | UPD75108A |
| 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)： | 19/66頁(yè) |
| 文件大?。?/td> | 460K |
| 代理商： | UPD75108A |
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μ
PD75104A, 75108A
19
Shared witn SI, SO, SCK, and
Can always be read or tested regardless of operation
mode of shared pin
INT4 pins
4-bit input
Shared with INT0 to 3 pins each
bit can be connected to pull-up
resistor by mask otion.
Each bit of Port 6 pins can be
Can be set in input or output mode bitwise
connected to pull-up resistor by
mask option
Shared with PTO0, PTO1, and
PCL pins.
4-bit I/O*
4-bit I/O*
Can be set in input or output mode in 4-bit units.
Each bit can be connected to
(N-ch open-drain.
Ports 12 and 13 can be used in pairs to input or
pull-up resistor by mask option
12V)
output 8-bit data
5.
PERIPHERAL HARDWARE FUNCTIONS
5.1
PORTS
I/O ports are classified into the following 3 kinds:
CMOS input (PORT0, 1)
CMOS input/output (PORT2, 3, 4, 5, 6, 7, 8, 9): 32
N-ch open-drain input/output (PORT12, 13, 14)
: 12
:
8
Total
: 52
Table 5-1 Port Function
PORT0
PORT1
PORT3
PORT6
PORT2
PORT4
PORT5
PORT7
PORT8
PORT9
PORT12
PORT13
PORT14
Port
(Symbol)
Function
Operation and Features
Remarks
Can be set in input or output mode in 4-bit units.
Ports 4 and 5, 6 and 7, 8 and 9 can be used in pairs
to input or output 8-bit data
Each bit can be connected to pull-
up resistor by mask option
*: Can directly drive LED.
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