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參數(shù)資料
| 型號(hào)： | UPD75216AGF |
| 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)： | 17/72頁(yè) |
| 文件大?。?/td> | 530K |
| 代理商： | UPD75216AGF |
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17
μ
PD75216A
5.
PERIPHERAL HARDWARE FUNCTIONS
5.1
PORTS
I/O ports have the following three functions.
CMOS input (PORT0, 1)
CMOS input/output (PORT2, 3, 4, 5, 6)
P-ch open-drain, high-voltage, high-current output (PORTH) : 4
Total
: 8
: 20
32
Table 5-1 Port Functions
Remarks
Port Name
Always read or test possible irrespective of the dual-function
pin operating mode.
Always read or test possible, P10 and P11 are inputs with the
noise elimination function.
Can be set bit-wise to the input or output mode. Port 6 can
incorporate a pull-down resistor as a mask option.
Can be set to the input or output mode in 4-bit units.
Ports 4 and 5 can input/output data in pairs in 8-bit units.
Ports 4 and 5 can directly drive LEDs.
P-ch open-drain high-voltage, high-current output port. Can
drive an FIP and LED directly. Can incorporate a pull-down
resistor bit-wise as a mask option.
Shares the pins with SI, SO, SCK
and INT4.
Shares the pins with INT0 to INT
2 and TI0.
P23 shares the pin with BUZ.
Shares the pins with T10/S15 to
T13/S12.
Operation and Feature
Function
4-bit input
PORT0
PORT1
PORT3
PORT6
4-bit
input/output
PORT2
PORT4
PORT5
PORTH
4-bit output
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