Initialization Conditions (Reset Groups) - Epson S1C31W65 Technical Manual

2 POWER SUPPLY, RESET, AND CLOCKS

2.2.6 Initialization Conditions (Reset Groups)

A different initialization condition is set for the CPU registers and peripheral circuit control bits, individually. The
reset group refers to an initialization condition. Initialization is performed when a reset source included in a reset
group issues a reset request. Table 2.2.6.1 lists the reset groups. For the reset group to initialize the registers and con-
trol bits, refer to the "CPU and Debugger" chapter or "Control Registers" in each peripheral circuit chapter.
Reset group
H0
H1
H2
S0
2-6
Table 2.2.6.1 List of Reset Groups
Reset source
#RESET pin
POR and BOR
Reset request from the CPU
Key-entry reset
Supply voltage detector reset
Watchdog timer reset
#RESET pin
POR and BOR
Reset request from the CPU
POR and BOR
Peripheral circuit software reset
(MODEN and SFTRST bits. The
software reset operations de-
pend on the peripheral circuit.
Seiko Epson Corporation
Reset cancelation timing
Reset state is maintained for the reset
hold time t after the reset request is
RSTR
canceled.
Reset state is canceled immediately
after the reset request is canceled.
S1C31W65 TECHNICAL MANUAL
(Rev. 1.1)