SN8P1829
8-Bit MCU build-in 12-bit ADC + PGIA + Charge-pump Reg 128 dots LCD driver
SONiX TECHNOLOGY CO., LTD
Page 49
Version 1.0
SYSTEM MODE CONTROL
SN8P1829 SYSTEM MODE BLOCK DIAGRAM
Figure 7-7. SN8P1829 System Mode Block Diagram
MODE NORMAL SLOW Green SLEEP REMARK
HX osc.
Running
By STPHX
By STPHX
Stop
LX osc.
Running
Running
Running
Stop
CPU instruction
Executing Executing
Stop
Stop
T0 timer
*Active
*Active *Active Inactive
TC0 timer
*Active
*Active *Active Inactive
TC1 timer
*Active
*Active
Inactive
Inactive
* Active by
program
Watchdog timer
Active
Active
Inactive
Inactive
Internal interrupt
All active
All active
TC0
All inactive
External interrupt
All active
All active
All Active
All inactive
Wakeup source
-
-
Port0, Port1, T0,
Reset
P0, P1, Reset
Table 7-1. Oscillator Operating Mode Description
Note: In the green mode, T0 trigger signals can switch CPU return to the last mode. If the system was into
green mode from normal mode, the system returns to normal mode. If the system was into green mode
from slow mode, the system returns to slow mode.
Normal Mode
Green Mode
Slow Mode
Power Down Mode
(Sleep Mode)
P0, P1 wake-up function active.
External reset circuit active.
CPUM1, CPUM0 = 01
CLKMD = 0
CLKMD = 1
CPUM1, CPUM0 = 10
P0, P1 wake-up function active.
T0, TC0 time out.
P0, P1 wake-up function active.
T0, TC0 time out.
External reset circuit active.
External reset circuit active.
Normal Mode
Green Mode
Slow Mode
Power Down Mode
(Sleep Mode)
P0, P1 wake-up function active.
External reset circuit active.
CPUM1, CPUM0 = 01
CLKMD = 0
CLKMD = 1
CPUM1, CPUM0 = 10
P0, P1 wake-up function active.
T0, TC0 time out.
P0, P1 wake-up function active.
T0, TC0 time out.
External reset circuit active.
External reset circuit active.