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TTP259-ASFN Datasheet(PDF) 17 Page - Tontek Design Technology

Part # TTP259-ASFN
Description  Preliminary
PDF  81 Pages
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Manufacturer  TONTEK [Tontek Design Technology]
Direct Link  http://www.tontek.com.tw
Logo TONTEK - Tontek Design Technology

TTP259-ASFN Datasheet(HTML) 17 Page - Tontek Design Technology

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Preliminary
TTP259
TonTouch
TM
2015/05/25
Page 17 of 81
Ver: 1.1
S-4: Power saving mode (Stop mode and Sleep mode)
The CPU enters stop or sleep mode is operated by writing CPU power
saving control register (PS). During the power saving mode, CPU holds the
internal status of the system. In stop mode, the oscillator clocks will be
stopped and system need a warm-up time for the stability of system clock
running after wake up.
S-5: MCU System Operating Mode
The MCU has 4 operating modes, including high speed operation, low
speed operation, sleep and stop modes. After power on reset, the MCU will
go into high speed operation mode automatically. After wake up from
sleep mode, the MCU will resume the last operation mode.
STOP mode
OSCH off & OSCL off
High speed operating
mode
OSCH on & OSCL on
SLEEP mode
CPU stop
RESET
Low speed operating
mode
OSCH off & OSCL on
STOP/
wake up
STOP/
wake up
Reset
Reset
Reset
Reset
Reset release
SLEEP/
wake up
SLEEP/
wake up
H/L
Figure: System Operation State Diagram



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