EM78156EAS EMC [ELAN Microelectronics Corp], EM78156EAS Datasheet - Page 24

• Manufacturer Part Number: EM78156EAS
• Description: 8-Bit Microcontroller with MASK ROM
• Manufacturer: EMC [ELAN Microelectronics Corp]

EM78156E
8-Bit Microcontroller with MASK ROM
20 •
4.6 Interrupt
W D T E
Power-on
V oltage
D etector
R eset
Table 6 The Values of RST, T and P after RESET
Table 7 The Status of T and P Being Affected by Events.
The EM78156E has three falling-edge interrupts listed below:
(1) TCC overflow interrupt
(2) Port 6 Input Status Change Interrupt
(3) External interrupt [(P60, /INT) pin].
Before the Port 6 Input Status Change Interrupt is enabled, reading Port 6 (e.g. "MOV
R6,R6") is necessary. Each pin of Port 6 will have this feature if its status changed.
Power on
/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
Power on
WDTC instruction
WDT time-out
SLEP instruction
Wake-Up on pin change during SLEEP mode
/R E SE T
O scillator
Fig. 9 Block Diagram of Controller Reset
W D T
Reset Type
W D T T im eout
Event
V D D
(This specification is subject to change without further notice)
D
C L K
C L R
Q
Setup T im e
Product Specification (V1.3) 07.29.2004
*
*
P: Previous status before reset
P: Previous value before reset
*
T
1
1
0
0
1
T
1
1
0
1
1
P
R E SE T
C L K
*
*
*
P
P
1
0
0
0
1
1
0
0
P
P
P