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HT56R22 Datasheet(PDF) 31 Page - Holtek Semiconductor Inc

Part # HT56R22
Description  TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56R22 Datasheet(HTML) 31 Page - Holtek Semiconductor Inc

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HT56R22/HT56R23/HT56R24/HT56R25/HT56R26
Rev. 1.30
31
December 26, 2014
· Sleep Mode
fM,fSLOW,fSYS,fS, CPU off; fSUB,fWDT on/off depending
upon the WDT configuration option and WDT control
register.
For all devices, when the system enters the Sleep or Idle
Mode, the high frequency system clock will always stop
running. The accompanying tables shows the relation-
ship between the CLKMOD bit, the HALT instruction
and the high/low frequency oscillators. The CLMOD bit
can change normal or Slow Mode.
C L K M O D R e g i s t e r
f S Y S s e l e c t
1 : f M
0 : f S L O W
I d l e m o d e
1 : e n a b l e
0 : d i s a b l e
H i g h o s c i l l a t o r r e a d y f l a g
1 : t i m e - o u t
0 : n o n - t i m e - o u t
L o w o s c i l l a t o r r e a d y f l a g
1 : t i m e - o u t
0 : n o n - t i m e - o u t
S P I / I C c o n t i n u e s r u n n i n g i n I d l e m o d e
1 : e n a b l e
0 : d i s a b l e
f S L O W s e l e c t i o n
b 0
I D L E N
H L C L K
H T O
L T O
b 7
S L O W C 0
S L O W C 1
S L O W C 2
f S L O W
f S L
f S L
f M / 6 4
f M / 3 2
f M / 1 6
f M / 8
f M / 4
f M / 2
S L O W W C 2
0
0
0
0
1
1
1
1
S L O W W C 1
0
0
1
1
0
0
1
1
S L O W W C 0
0
1
0
1
0
1
0
1
S I M I D L E
2
Clock Control Register
- CLKMOD
· Operating Mode Control
Operation Mode
Description
CPU
fSYS
fSUB
NORMAL Mode
On
fM
On
SLOW0 Mode
On
fSL
On
SLOW1 Mode
On
fM/2~fM/64
On
IDLE Mode
Off
Off
On
SLEEP Mode
Off
Off
On/Off


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