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參數(shù)資料
| 型號： | H8S2149 |
| 廠商： | Renesas Technology Corp. |
| 英文描述： | Hitachi 16-Bit Single-Chip Microcomputer |
| 中文描述： | 日立16位單片機(jī) |
| 文件頁數(shù)： | 737/1035頁 |
| 文件大?。?/td> | 4183K |
| 代理商： | H8S2149 |
703
23.2.2
Low-Power Control Register (LPWRCR)
7
DTON
0
R/W
R/W
6
LSON
0
R/W
R/W
5
NESEL
0
R/W
R/W
4
EXCLE
0
R/W
R/W
3
—
0
R/W
—
0
—
0
—
—
2
—
0
—
—
1
—
0
—
—
Bit
Initial value
Read/Write
(H8S/2169)
Read/Write
(H8S/2149)
LPWRCR is an 8-bit readable/writable register that performs power-down mode control.
Only bit 4 is described here. For a description of the other bits, see section 24.2.2, Low-Power
Control Register (LPWRCR).
LPWRCR is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 4—Subclock Input Enable (EXCLE):
Controls subclock input from the EXCL pin.
Bit 4
EXCLE
Description
0
Subclock input from EXCL pin is disabled
(Initial value)
1
Subclock input from EXCL pin is enabled
23.3
Oscillator
Clock pulses can be supplied by connecting a crystal resonator, or by input of an external clock.
23.3.1
Connecting a Crystal Resonator
Circuit Configuration:
A crystal resonator can be connected as shown in the example in figure
23.2. Select the damping resistance R
d
according to table 23.2. An AT-cut parallel-resonance
crystal should be used.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| H8S2169 | Hitachi 16-Bit Single-Chip Microcomputer |
| H9000 | Peripheral IC |
| H9100 | Peripheral IC |
| H9018 | NPN SILICON TRANSISTOR |
| HA-2404 | 40MHz, PRAM Four Channel Programmable Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| H8S2153 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-Bit Single-Chip Microcomputer H8S Family / H8S/2100 Series |
| H8S2160B | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Expansion I/O Board (HS2160EIO61H) for E6000 Emulator |
| H8S-2160B | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Expansion I/O Board (HS2160EIO61H) for E6000 Emulator |
| H8S2161B | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Hitachi 16-Bit Single-Chip Microcomputer |
| H8S2164 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:16-Bit Single-Chip Microcomputer H8S Family / H8S/2400 Series |
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