EM78P458/459
OTP ROM
Table 5 The Values of RST, T, and P after RESET
Reset Type
T
P
Power-on
1
*P
1
1
*P
0
*P
0
0
/RESET during Operating mode
/RESET wake-up during SLEEP mode
WDT during Operating mode
WDT wake-up during SLEEP mode
Wake-up on pin change during SLEEP mode
0
0
1
*P: Previous status before reset
Table 6 The Status of RST, T and P being Affected by Events
Event
T
P
Power-on
1
1
0
1
1
1
WDTC instruction
WDT time-out
SLEP instruction
1
*P
0
0
Wake-up on pin changed during SLEEP mode
*P: Previous value before reset
VDD
D
Q
CLK
Oscillator
CLK
CLR
Power-On Reset
Voltage Detector
W
WDT Timeout
Reset
Setup time
WDT
/RESET
Fig. 10 Block Diagram of Reset of Controller
This specification is subject to change without prior notice.
29
06.25.2004 (V1.4)
ELAN [ ELAN MICROELECTRONICS CORP ]
