EM78P468NBQ EMC [ELAN Microelectronics Corp], EM78P468NBQ Datasheet - Page 27

• Manufacturer Part Number: EM78P468NBQ
• Description: 8-BIT Microcontroller
• Manufacturer: EMC [ELAN Microelectronics Corp]

Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
4.2.15 IOC81/WDTCR (WDT Control R gister)
Bit 6 (INT
Bit 5 (TS)
Bit 4 (TE): TCC signal edge
B
Bit
Bit 3 (W
timer,
it 3~0 (P RE,TCCP2 ~ TCCP ): TCC pr -scaler bi .
Bit 7
7 ~ 4:Not u
--
PSRE
I
INT
INT
TS = “0”: internal instruct
TS = “1”: transition on TCC pin, TCC period >
TE = ”0”: increment by TCC pin rising edge
TE = “1”: incre
W
WD
NT_EDGE
(Address: 08h, Bit 0 of R5 = “1”)
DT
0
1
1
1
1
1
1
1
1
DT
TE = “1
= ”
= “
): I
: T
S
E = “0”: Disable WDT function.
E): watchdog timer enable. This control bit is used
NT enable flag, this bit is read only
CC signal source
0”: interrupt mask
1”: interrupt enabl
Bit 6
sed
--
”: enable WDT function.
= ”1”: Inte
me
TCCP2
nt by T
Bit 5
X
0
0
0
0
1
1
1
1
--
rrupt on fa
CC
ed by DISI or hard
ed by ENI/RETI instructi
ion
0
pin fall
cycle clock
Bit 4
--
lling edge of P5.4/INT0 pin
TCCP1
ing
X
0
0
1
1
0
0
1
1
e
WDTE
edge
Bit 3
e
wa
re i
inte
ts
WDTP2
TCCP0
ons
nterrupt
rnal instruction c
Bit 2
X
0
1
0
1
0
1
0
1
to e
8-BIT Microcontroller
WDTP1
nable the Watchdog
Bit 1
TCC rate
EM78P468N
lock p
1:128
1:256
1:16
1:32
1:64
1:1
1:2
1:4
1:8
WDTP0
Bit 0
eriod
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