參數(shù)資料
型號： ST10F269Z2Q6
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
封裝： 28 X 28 MM, PLASTIC, QFP-144
文件頁數(shù)： 27/184頁
文件大?。?/td> 3276K
代理商： ST10F269Z2Q6
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19 - POWER REDUCTION MODES
ST10F269
19 - POWER REDUCTION MODES
Two different power reduction modes with different
levels of power reduction have been implemented
in the ST10F269. In Idle mode only CPU is
stopped, while peripheral still operate. In Power
Down mode both CPU and peripherals are
stopped.
Both mode are software activated by a protected
instruction and are terminated in different ways as
described in the following sections.
Note:
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.
19.1 - Idle Mode
Idle mode is entered by running IDLE protected
instruction. The CPU operation is stopped and the
peripherals still run.
Idle mode is terminate by any interrupt request.
Whatever the interrupt is serviced or not, the
instruction following the IDLE instruction will be
executed
after
return
from
interrupt
(RETI)
instruction, then the CPU resumes the normal
program.
Note that a PEC transfer keep the CPU in Idle
mode. If the PEC transfer does not succeed, the
Idle mode is terminated. Watchdog timer must be
properly programmed to avoid any disturbance
during Idle mode.
19.2 - Power Down Mode
Power Down mode starts by running PWRDN
protected instruction. Internal clock is stopped, all
MCU parts are on hold including the watchdog
timer.
There are two different operating Power Down
modes: protected mode and interruptible mode.
The internal RAM contents can be preserved
through the voltage supplied via the VDD pins. To
verify RAM integrity, some dedicated patterns
may be written before entering the Power Down
mode and have to be checked after Power Down
is resumed.
It is mandatory to keep VDD = +5V ±10% during
power-down
mode,
because
the
on-chip
voltage regulator is turned in power saving
mode and it delivers 2.5V to the core logic, but
it must be supplied at nominal VDD = +5V.
19.2.1 - Protected Power Down Mode
This mode is selected when PWDCFG (bit 5) of
SYSCON register is cleared. The Protected
Power Down mode is only activated if the NMI pin
is pulled low when executing PWRDN instruction
(this means that the PWRD instruction belongs to
the NMI software routine). This mode is only
deactivated with an external hardware reset on
RSTIN pin.
Note: During power down the on-chip voltage
regulator automatically lowers the internal
logic supply voltage to 2.5V, to save power
and to keep internal RAM and registers
contents.
19.2.2 - Interruptible Power Down Mode
This mode is selected when PWDCFG (bit 5) of
SYSCON register is set (See Chapter : Special
The Interruptible Power Down mode is only
activated if all the enabled Fast External Interrupt
pins are in their inactive level (see EXICON
register description below).
This mode is deactivated with an external reset
applied to RSTIN pin or with an interrupt request
applied to one of the Fast External Interrupt pins.
To allow the internal PLL and clock to stabilize,
the RSTIN pin must be held low according
the recommendations
described
in
EXICON (F1C0h / E0h
ESFR
Reset Value: 0000h
15
14
13
12
11
10
9876543210
EXI7ES
EXI6ES
EXI5ES
EXI4ES
EXI3ES
EXI2ES
EXI1ES
EXI0ES
RW
EXIxES(x=7...0)
External Interrupt x Edge Selection Field (x=7...0)
0 0:
Fast external interrupts disabled: standard mode
EXxIN pin not taken in account for entering/exiting Power Down mode.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST10F269Z2Q6/TR 功能描述:16位微控制器 - MCU 16B MCU 256K Byte and 12K Byte RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
ST10F269Z2QX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYTE RAM
ST10F269Z2T3 功能描述:16位微控制器 - MCU ST10F272 16B MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
ST10F269Z2T6 功能描述:16位微控制器 - MCU ST10F272 16B MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
ST10F269ZX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:16-BIT MCU WITH MAC UNIT, 128K to 256K BYTE FLASH MEMORY AND 12K BYTE RAM
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