EM78468
8-BIT Microcontroller
4.5 RESET and Wake-up
A reset can be activated by
POR (Power On Reset)
WDT timeout. (if enabled)
/RESET pin go to low.
Note:The power on reset circuit is always enabled. It will reset CPU at about 1.9V.
Once reset occurs, the following functions are performed
The oscillator is running, or will be started.
The program counter (R2/PC) is set to all "0".
All I/O port pins are configured as input mode (high-impedance state).
The TCC/Watchdog timer and pre-scaler are cleared.
When power on, the Bit 5, 6 of R3 and the upper 2 bits of R4 are cleared.
Bits of the IOC71 register are set to all "1" except for Bit 6 (INT flag).
For other registers, see Table 2 below.
Product Specification (V1.1) 04.11.2005
• 31
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
