MB90385 Datasheet, PDF (33/82 Pages) Fujitsu Component Limited. – 16-bit Proprietary Microcontroller CMOS

MB90385 Series
• Watchdog timer block diagram
Watchdog timer control register(WDTC)
Clock timer control register (WTC)
PONR
WRST ERST SRST WTE WT1 WT0
Watchdog timer
2
WDCS
Reset occurs
Shift to sleep mode
Shift to time-base
timer mode
Shift to clock mode
Shift to stop mode
Counter
clear control
circuit
Activate
Count clock
selector
2-bit
counter
Clear
4
Watchdog
reset
generation
circuit
Internal reset
generation
circuit
4
Main clock
(dividing HCLK by 2)
Time-base timer counter
2¹ 2²
2⁸ 2⁹ 2¹⁰ 2¹¹ 2¹² 2¹³ 2¹⁴ 2¹⁵ 2¹⁶ 2¹⁷ 2¹⁸
Sub clock
SCLK
Clock counter
2¹ 2²
2⁵ 2⁶ 2⁷ 2⁸ 2⁹ 2¹⁰ 2¹¹ 2¹² 2¹³ 2¹⁴ 2¹⁵
HCLK: Oscillation clock
SCLK: Sub clock
33