SN8P1829
8-Bit MCU build-in 12-bit ADC + PGIA + Charge-pump Reg 128 dots LCD driver
SONiX TECHNOLOGY CO., LTD
Page 120
Version 1.0
VOLTAGE CHARGE-PUMP REGULATOR (CPR)
SN8P1829 is built in a CPR, which can provide a stable 3.8V (pin AVDDR) with maximum 5mA current driving capacity.
Register CPM can enable or disable CPR and controls CPR working mode, another register CPCKS sets CPR working
clock to 100KHz. If user turns on the CPR (CPRENB = 1), then power of PGIA, OPA and ADC is come from CPR, be
careful to turn on CPR first before enabling PGIA, OPA and ADC. In addition, the CPR will need at least 10ms for
output voltage stabilization after set CPRENB to high.
CPM-Charge Pump Mode Register
095H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CPM
- - - -
CPSTS
CPAUTO
CPON
CPRENB
- - - - R
R/W
R/W
R/W
CPRENB:
Charge Pump / Regulator function enable control bit.
0 = Disable charge pump and regulator,
1 = Enable charge pump and regular.
Note: 10ms delay is necessary for output voltage stabilization after set CPRENB = “1”.
CPON:
Change Pump always ON function control bit (CPRENB must = “1”)
0 = Charge Pump On / Off controlled by bit CPAUTO.
1 = Always turn ON the charge pump regulator.
CPAUTO:
Charge Pump Auto Mode function control bit
0 = Disable charge pump auto mode.
1 = Enable charge pump auto mode.
CPSTS:
Charge-Pump status bit in AUTO Mode (Only available when CPAUTO = “1”)
0 = Charge-Pump is OFF in Auto mode.
1 = Charge-Pump is ON in Auto mode.