參數(shù)資料
型號: HD404628R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
中文描述: 由于微機安裝有雙音多頻發(fā)電機斷路器(微計算機帶雙音多頻發(fā)生器電路)
文件頁數(shù): 47/155頁
文件大?。?/td> 549K
代理商: HD404628R
HD404629R Series
47
Notes: 1. Circuit constants differ by the different types of crystal oscillators, ceramic oscillators, and with
the stray capacitance of the board, so consult the manufacturer of the oscillator to determine the
circuit parameters.
2. The wiring between the OSC
, OSC
(X1 and X2 pins), and the other elements should be as
short as possible, and must not cross other wiring. Refer to figure 28.
3. If not using a 32.768-kHz crystal oscillator, fix the X1 pin to V
CC
and leave the X2 pin open.
Input/Output
The MCU has 42 input/output pins (D
0
–D
9
, R0
0
–R7
3
) and 2 input pins (D
10
, D
11
). The features are
described below.
Ten pins (D
0
–D
9
) are high-current input/output pins.
The D
10
and D
11
, and R0
0
–R7
3
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. Input/output
pins are in 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 29, 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
HD4074629 AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404628RFS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404628RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a DTMF Generator Circuit
HD404628RTF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404628TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404629FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller