參數(shù)資料
型號(hào)： S1C63358F0A0100
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP15-100
文件頁(yè)數(shù)： 29/38頁(yè)
文件大?。?/td> 1226K
代理商： S1C63358F0A0100
S1C63358 TECHNICAL MANUAL
EPSON
25
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Setting of Power Supply and Operating Mode)
4.2.5 I/O memory of power supply and operating mode
Table 4.2.5.1 shows the I/O addresses and control bits for the power supply and the operation mode.
Table 4.2.5.1 Control bits of power supply and operating mode
Address
Comment
D3
D2
Register
D1
D0
Name
Init 1
10
FF60H
LDUTY1 LDUTY0 VCCHG LPWR
R/W
LDUTY1
LDUTY0
VCCHG
LPWR
0
0On
Off
LCD drive duty
switch
General-purpose register (reserved register)
LCD power On/Off
0
1/4
1
1/3
2, 3
1/2
[LDUTY1, 0]
Duty
FF01H
VADSEL VDSEL
0
R/W
R
VADSEL
VDSEL
0 3
0
– 2
VC2
VDD
Power source selection for A/D converter
Power supply selection for oscillation system voltage regulator
Unused
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read
LPWR: Booster control (ON/OFF) register (FF60HD0)
Controls booster ON/OFF for the voltage booster (LCD power booster).
When "1" is written: Booster ON
When "0" is written: Booster OFF
Reading: Valid
When the power supply voltage is in a range of 0.9 to 1.4 V, generate VC2 by LCD booster to drive the
internal power supply circuit. When "1" is written to the LPWR register, the voltage booster generates
VC2. When "0" is written, boostering is not performed. When the power supply voltage is 1.4 V or more,
do not use the voltage VC2 for oscillation system voltage regulator. However, this does not apply when
the battery voltage falls by heavy load such as driving a buzzer and turning a lamp on.
When the power supply voltage is 1.6 V or more, do not use the voltage VC2 for the A/D converter.
At initial reset, this register is set to "0".
VDSEL: Power supply selection register for oscillation system voltage regulator (FF01HD2)
Selects the power supply for the oscillation system voltage regulator.
When "1" is written: VC2
When "0" is written: VDD
Reading: Valid
When "1" is written to the VDSEL register, the oscillation system voltage regulator enters the VC2 mode
and operates with VC2 output from the LCD booster. When "0" is written to the VDSEL register, the
oscillation system voltage regulator operates with VDD and the operating mode becomes the normal
mode.
When switching from the normal mode to the VC2 mode, the VDSEL register should be set to "1" after
taking a 100 msec or longer interval for the VC2 to stabilize from setting the LPWR register to "1".
At initial reset, this register is set to "0".
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