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参数资料
| 型号： | ST10R172LT6 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, 50 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, TQFP-100 |
| 文件页数： | 19/68页 |
| 文件大小： | 657K |
| 代理商： | ST10R172LT6 |
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ST10R172L - POWER REDUCTION MODES
13
POWER REDUCTION MODES
Two different power reduction modes with different levels of power reduction can be entered
under software control.
In Idle mode the CPU is stopped, while the peripherals continue their operation. Idle mode
can be terminated by any reset or interrupt request.
In Power Down mode both the CPU and the peripherals are stopped. Power Down mode can
now be configured by software in order to be terminated only by a hardware reset or by an
external interrupt source on fast external interrupt pins.
All external bus actions are completed before Idle or Power Down mode is entered. However,
Idle or Power Down mode is not entered if READY is enabled, but has not been activated
(driven low for negative polarity, or driven high for positive polarity) during the last bus access.
14
SPECIAL FUNCTION REGISTERS
The following table lists all ST10R172L SFRs in alphabetical order.
Bit-addressable SFRs are marked with the letter “b” in column “Name”. SFRs within the
Extended SFR-Space (ESFRs) are marked with the letter “E” in column “Physical Address”.
An SFR can be specified by its individual mnemonic name. Depending on the selected
addressing mode, an SFR can be accessed by its physical address (using the Data Page
Pointers), or by its short 8-bit address (without using the Data Page Pointers).
Name
Physical
Address
8-Bit
Address
Description
Reset
Value
ADDRSEL1
FE18h
0Ch
Address Select Register 1
0000h
ADDRSEL2
FE1Ah
0Dh
Address Select Register 2
0000h
ADDRSEL3
FE1Ch
0Eh
Address Select Register 3
0000h
ADDRSEL4
FE1Eh
0Fh
Address Select Register 4
0000h
BUSCON0
b
FF0Ch
86h
Bus Configuration Register 0
0XX0h
BUSCON1
b
FF14h
8Ah
Bus Configuration Register 1
0000h
BUSCON2
b
FF16h
8Bh
Bus Configuration Register 2
0000h
BUSCON3
b
FF18h
8Ch
Bus Configuration Register 3
0000h
BUSCON4
b
FF1Ah
8Dh
Bus Configuration Register 4
0000h
CAPREL
FE4Ah
25h
GPT2 Capture/Reload Register
0000h
CC8IC
b
FF88h
C4h
EX0IN Interrupt Control Register
0000h
Table 10 Special functional registers
1
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