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參數(shù)資料
| 型號： | ST6253CM1 |
| 廠商： | 意法半導體 |
| 英文描述： | Replaced by PT78HT265 : 6.5Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
| 中文描述： | 8位檢察官辦公室/存儲器與阿微控制器/ D轉(zhuǎn)換器，安全復(fù)位，自動重加載定時器，EEPROM和的SPI |
| 文件頁數(shù)： | 19/75頁 |
| 文件大小： | 540K |
| 代理商： | ST6253CM1 |
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19/75
ST62T53B/T60B/T63B ST62E60B
CLOCK SYSTEM
(Cont’d)
Oscillator Control Registers
Address: DCh
—
Write only
Bit 7-4. These bits are not used.
Bit 3. Reserved. Cleared at Reset. THIS BIT
MUST BE SET TO 1 BY USER PROGRAM to
achieve lowest power consumption.
Bit 2. Reserved. Must be kept low.
RS1-RS0. These bits select the division ratio of
the Oscillator Divider in order to generate the inter-
nal frequency. The following selctions are availa-
ble:
Note
: Care is required when handling the OSCR
register as some bits are write only. For this rea-
son, it is not allowed to change the OSCR contents
while executing interrupt service routine, as the
service routine cannot save and then restore its
previous content. If it is impossible to avoid the
writing of this register in interrupt service routine,
an image of this register must be saved in a RAM
location, and each time the program writes to
OSCR it must write also to the image register. The
image register must be written first, so if an inter-
rupt occurs between the two instructions the
OSCR is not affected.
Figure 10. Clock Circuit Block Diagram
7
0
-
-
-
-
OSCR
3
OSCR
2
RS1
RS0
RS1
0
0
1
1
RS0
0
1
0
1
Division Ratio
1
2
4
4
MAIN
OSCILLATOR
Core
SPI
: 13
: 12
: 1
Timer
Watchdog
POR
f
INT
ADC
AR Timer
OSCILLATOR
DIVIDER
RS0, RS1
OSCin
OSCout
f
OSC
f
OSC
19
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST6253CM3 | Replaced by PT78HT265 : 6.5Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
| ST6253CM6 | Replaced by PT78HT265 : 6.5Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
| ST6263BM3 | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI |
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| ST6253BB1 | Replaced by PT78HT233 : 3.3Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST6253CM1/XXX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM3 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM3/XXX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM6/XXX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
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