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參數(shù)資料
| 型號(hào)： | 7548 |
| 廠商： | Renesas Technology Corp. |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機(jī) |
| 文件頁數(shù)： | 40/73頁 |
| 文件大?。?/td> | 1255K |
| 代理商： | 7548 |
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Rev.2.00
REJ03B0210-0200
Mar 15, 2007
Page 40 of 70
7548 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Notes on Watchdog Timer
(1) The watchdog timer operates in wait mode. To prevent
underflow, write to the watchdog timer control register.
The watchdog timer stops in stop mode, but starts counting
at the same time as exiting stop mode. After exiting stop
mode, it continues counting during oscillation stabilization
time. To prevent underflow during the period, the watchdog
timer H count source selection bit (bit 7) in the watchdog
timer control register (address 0039
16
) should be set to “0”
before executing the STP instruction.
Note that the watchdog timer continues counting even if the
STP instruction is executed in the following two conditions:
1
Stopping the low-speed on-chip oscillator: Disabled (bit
4 in FSROM2)
Source clock of the watchdog timer: Low-speed on-chip
oscillator/16 (bit 0 in FSROM2)
2
Stopping the low-speed on-chip oscillator: Disabled (bit
4 in FSROM2)
Source clock of the watchdog timer:
φ
SOURCE (bit 0 in
FSROM2)
φ
SOURCE: Low-speed on-chip oscillator (bits 5 and 4 in
CLKM)
(2) STP instruction function selection bit
The function of the STP instruction can be selected by the bit
2 in FSROM2. This bit cannot be used for rewriting by
executing the STP instruction.
When this bit is set to “0”, stop mode is entered by
executing the STP instruction.
When this bit is set to “1”, internal reset occurs by
executing the STP instruction.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 7549 | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 75HQ | SCHOTTKY RECTIFIER |
| 75HQ030 | SCHOTTKY RECTIFIER |
| 75HQ035 | SCHOTTKY RECTIFIER |
| 75HQ040 | SCHOTTKY RECTIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 7548_07 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Standard Characteristics |
| 7548_0710 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 75481-001 | 功能描述:集管和線殼 BACKPANEL PINS RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點(diǎn)類型:Pin (Male) 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點(diǎn)材料:Brass 觸點(diǎn)電鍍:Gold 制造商:Hirose Connector |
| 75481-002 | 功能描述:集管和線殼 BERGPIN - WITH LARGE STA-R RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點(diǎn)類型:Pin (Male) 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點(diǎn)材料:Brass 觸點(diǎn)電鍍:Gold 制造商:Hirose Connector |
| 75481-004 | 功能描述:集管和線殼 BERGPIN RoHS:否 產(chǎn)品種類:1.0MM Rectangular Connectors 產(chǎn)品類型:Headers - Pin Strip 系列:DF50 觸點(diǎn)類型:Pin (Male) 節(jié)距:1 mm 位置/觸點(diǎn)數(shù)量:16 排數(shù):1 安裝風(fēng)格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點(diǎn)材料:Brass 觸點(diǎn)電鍍:Gold 制造商:Hirose Connector |
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