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參數(shù)資料
| 型號(hào)： | ST90R158T1 |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, 14 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | PLASTIC, TQFP-80 |
| 文件頁(yè)數(shù)： | 163/190頁(yè) |
| 文件大?。?/td> | 1152K |
| 代理商： | ST90R158T1 |
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ST90158 - RESET AND CLOCK CONTROL UNIT (RCCU)
6.4 CLOCK CONTROL REGISTERS
MODE REGISTER (MODER)
R235 - Read/Write
System Register
Reset Value: 1110 0000 (E0h)
*Note:
This register contains bits which relate to
other functions; these are described in the chapter
dealing with Device Architecture. Only those bits
relating to Clock functions are described here.
Bit 5 = DIV2:
OSCIN Divided by 2.
This bit controls the divide by 2 circuit which oper-
ates on the OSCIN Clock.
0: No division of the OSCIN Clock
1: OSCIN clock is internally divided by 2
Bit 4:2 = PRS[2:0]:
Clock Prescaling.
These bits define the prescaler value used to pres-
cale CPUCLK from INTCLK. When these three
bits are reset, the CPUCLK is not prescaled, and is
equal to INTCLK; in all other cases, the internal
clock is prescaled by the value of these three bits
plus one.
CLOCK CONTROL REGISTER (CLKCTL)
R240 - Read Write
Register Page: 55
Reset Value: 0000 0000 (00h)
Bit 7 = INT_SEL:
Interrupt Selection.
0: The external interrupt channel input signal is se-
lected (Reset state)
1: Select the internal RCCU interrupt as the source
of the interrupt request
Bit 4:6 = Reserved for test purposes
Must be kept reset for normal operation.
Bit 3 = SRESEN:
Software Reset Enable.
0: The HALT instruction turns off the quartz, the
PLL and the CCU
1: A Reset is generated when HALT is executed
Bit 2 = CKAF_SEL:
Alternate Function Clock Se-
lect.
0: CK_AF clock not selected
1: Select CK_AF clock
Note: To check if the selection has actually oc-
curred, check that CKAF_ST is set. If no clock is
present on the CK_AF pin, the selection will not
occur.
Bit 1 = WFI_CKSEL:
WFI Clock Select.
This bit selects the clock used in Low power WFI
mode if LPOWFI = 1.
0: INTCLK during WFI is CLOCK2/16
1: INTCLK during WFI is CK_AF, providing it is
present. In effect this bit sets CKAF_SEL in WFI
mode
WARNING: When the CK_AF is selected as Low
Power WFI clock but the XTAL is not turned off
(R242.4 = 0), after exiting from the WFI, CK_AF
will be still selected as system clock. In this case,
reset the R240.2 bit to switch back to the XT.
Bit 0 = LPOWFI:
Low Power mode during Wait For
Interrupt.
0: Low Power mode during WFI disabled. When
WFI is executed, the CPUCLK is stopped and
INTCLK is unchanged
1: The ST9 enters Low Power mode when the WFI
instruction is executed. The clock during this
state depends on WFI_CKSEL
70
-
DIV2
PRS2
PRS1
PRS0
-
70
INT_S
EL
--
-
SRE-
SEN
CKAF_S
EL
WFI_CKS
EL
LPOW
FI
9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST90158M9T1 | 16-BIT, MROM, 14 MHz, MICROCONTROLLER, PQFP80 |
| ST92186B3BK | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP32 |
| ST92195B2T1/XXX | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP64 |
| ST92195B3B1/XXX | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP56 |
| ST92195B4B1/XXX | 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP56 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST90R158T6 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8/16-BIT MICROCONTROLLER (MCU) WITH 16 TO 64K ROM. OTP OR EPROM. 512 TO 2K RAM - ST9 + FAMILY |
| ST90R26B1 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller |
| ST90R26B6 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller |
| ST90R28 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:ROMLESS HCMOS MCU WITH RAM |
| ST90R28B1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:ROMLESS HCMOS MCU WITH RAM |
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