EM78468AQ EMC [ELAN Microelectronics Corp], EM78468AQ Datasheet - Page 33

• Manufacturer Part Number: EM78468AQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.1) 04.11.2005
(This specification is subject to change without further notice)
WDT setting flowchart
TCC setting flowchart
from External Input
*set clock source from external TCC pin
(set bit 4 of IOC71 to "1")
*set P5.6/TCC for TCC input Pin
( set bit 2 of RE to "1" and set bit 6 of IOC 50 to "1")
*choose TCC pin operation edge
(set by bit 4 of IOC71)
*choose TCC prescaler
(set by bit 0 to bit 3 of IOC71)
* Enable TCC interrupt Mask
(set bit 0 of IOCF0 to "1")
*Clear TCC interrupt Flag
(set bit 0 of RF to "0")
Enable TCC to start count
(use ENI instruction)
Enable WDT function : set bit 7 of
Code option Word 0 to "0"
External/ instruction cycle
TCC clock source?
Setting WDT prescaler
START
Use WDT function ?
END
(IOC81 register)
(bit 3 of IOC81)
Enable WDT
START
END
Y
N
WDTtime= prescaler*256/Fs
Fs: sub-oscillator frequency
from Instruction Cycle
Disable WDT function : set bit 7 of
Code option Word 0 to "1"
*choose TCC clock source from instruction cycle
(set bit 4 of IOC71 to "0")
*choose TCC prescaler
(set by bit 0 to bit 3 of IOC71)
8-BIT Microcontroller
EM78468
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