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參數(shù)資料
| 型號(hào)： | HD4048412TF |
| 廠商： | Hitachi,Ltd. |
| 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)： | 44/125頁(yè) |
| 文件大小： | 471K |
| 代理商： | HD4048412TF |
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HD404849 Series
44
Input/Output
The MCU has 33 input/output pins (D
0
–D
8
, R0–R3, R6, and R7) and two input pins (D
10
, D
11
). The
features are described below.
Nine pins (D
0
–D
8
) are high-current input/output pins.
The D
10
, D
11
, R0
0
–R0
2
, R1–R3, R6, and R7 input/output pins are multiplexed with peripheral function
pins such as for the timers or serial interface. For these pins, the peripheral function setting is done
prior to the D or R port setting. Therefore, when a peripheral function is selected for a pin, the pin
function and input/output selection are automatically switched according to the setting.
Input or output selection for input/output pins and port or peripheral function selection for multiplexed
pins are set by software.
Peripheral function output pins are CMOS output pins. Only the R2
3
/SO pin can be set to NMOS open-
drain output by software.
In stop mode, the MCU is reset, and therefore peripheral function selection is cancelled. The data
control register (DCD, DCR) is also reset, so input/output pins go to the high-impedance state.
Each input/output pin has a built-in pull-up MOS, which can be individually turned on or off by
software.
I/O buffer configuration is shown in figure 28, programmable I/O circuits are listed in table 23, and I/O pin
circuit types are shown in table 24.
Table 23 Programmable I/O Circuits
MIS3 (bit 3 of MIS)
0
1
DCD, DCR
0
1
0
1
PDR
0
1
0
1
0
1
0
1
CMOS buffer
PMOS
—
—
—
On
—
—
—
On
NMOS
—
—
On
—
—
—
On
—
Pull-up MOS
Note:
—
—
—
—
—
On
—
On
— indicates off status.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD404848 | 4-Bit Single-Chip Microcomputer |
| HD404848FS | 4-Bit Single-Chip Microcomputer |
| HD404848H | RELAY SOCKET |
| HD404848TF | PLASTIC-GRIP |
| HD404849 | TERMINAL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD404848 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404848FS | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404848H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404848TF | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404849 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
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