參數(shù)資料
型號: PCA9698DGG,512
廠商: NXP Semiconductors
文件頁數(shù): 33/48頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 40B 56TSSOP
產(chǎn)品培訓(xùn)模塊: I²C Bus Fundamentals
特色產(chǎn)品: NXP - I2C Interface
標準包裝: 35
接口: I²C
輸入/輸出數(shù): 40
中斷輸出:
頻率 - 時鐘: 1MHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 56-TFSOP(0.240",6.10mm 寬)
供應(yīng)商設(shè)備封裝: 56-TSSOP
包裝: 管件
包括: POR
產(chǎn)品目錄頁面: 826 (CN2011-ZH PDF)
其它名稱: 568-3241-5
935278614512
PCA9698DGG
39
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
9.5
Power-down Mode
When the SM2..0 bits are written to 010, the SLEEP instruction makes the MCU enter
Power-down mode. In this mode, the external Oscillator is stopped, while the external interrupts,
the 2-wire Serial Interface address watch, and the Watchdog continue operating (if enabled).
Only an External Reset, a Watchdog System Reset, a Watchdog Interrupt, a Brown-out Reset, a
2-wire Serial Interface address match, an external level interrupt on INT0 or INT1, or a pin
change interrupt can wake up the MCU. This sleep mode basically halts all generated clocks,
allowing operation of asynchronous modules only.
Note that if a level triggered interrupt is used for wake-up from Power-down mode, the changed
level must be held for some time to wake up the MCU. Refer to “External Interrupts” on page 61
for details.
When waking up from Power-down mode, there is a delay from the wake-up condition occurs
until the wake-up becomes effective. This allows the clock to restart and become stable after
having been stopped. The wake-up period is defined by the same CKSEL Fuses that define the
Reset Time-out period, as described in “Clock Sources” on page 26.
9.6
Power-save Mode
When the SM2..0 bits are written to 011, the SLEEP instruction makes the MCU enter
Power-save mode. This mode is identical to Power-down, with one exception:
If Timer/Counter2 is enabled, it will keep running during sleep. The device can wake up from
either Timer Overflow or Output Compare event from Timer/Counter2 if the corresponding
Timer/Counter2 interrupt enable bits are set in TIMSK2, and the Global Interrupt Enable bit in
SREG is set.
If Timer/Counter2 is not running, Power-down mode is recommended instead of Power-save
mode.
The Timer/Counter2 can be clocked both synchronously and asynchronously in Power-save
mode. If Timer/Counter2 is not using the asynchronous clock, the Timer/Counter Oscillator is
stopped during sleep. If Timer/Counter2 is not using the synchronous clock, the clock source is
stopped during sleep. Note that even if the synchronous clock is running in Power-save, this
clock is only available for Timer/Counter2.
9.7
Standby Mode
When the SM2..0 bits are 110 and an external crystal/resonator clock option is selected, the
SLEEP instruction makes the MCU enter Standby mode. This mode is identical to Power-down
with the exception that the Oscillator is kept running. From Standby mode, the device wakes up
in six clock cycles.
9.8
Extended Standby Mode
When the SM2..0 bits are 111 and an external crystal/resonator clock option is selected, the
SLEEP instruction makes the MCU enter Extended Standby mode. This mode is identical to
Power-save with the exception that the Oscillator is kept running. From Extended Standby
mode, the device wakes up in six clock cycles.
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