EM78P258N
8-Bit Microprocessor with OTP ROM
Bit 3 (PSWE): Prescaler enable bit for WDT
0 = prescaler disable bit, WDT rate is 1:1
1 = prescaler enable bit, WDT rate is set as Bit2 ~ Bit0
Bit 2 ~ Bit 0 (PSW2 ~ PSW0): WDT prescaler bits
PSW2 PSW1 PSW0 WDT Rate
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
6.2.11 IOCF0 (Interrupt Mask Register)
7
6
5
4
3
2
1
0
LPWTIE HPWTIE TCCCIE
TCCBIE
TCCAIE
EXIE
ICIE
TCIE
NOTE
■ IOCF0 register is both readable and writable
■ Individual interrupt is enabled by setting its associated control bit in the IOCF0 and in
IOCE0 Bit 5 to "1".
■ Global interrupt is enabled by the ENI instruction and is disabled by the DISI
instruction. Refer to Fig. 6-7 (Interrupt Input Circuit) under Section 6.6 (Interrupt).
Bit 7 (LPWTIE): LPWTIF interrupt enable bit
0 = Disable LPWTIF interrupt
1 = Enable LPWTIF interrupt
Bit 6 (HPWTIE): HPWTIF interrupt enable bit
0 = Disable HPWTIF interrupt
1 = Enable HPWTIF interrupt
Bit 5 (TCCCIE): TCCCIF interrupt enable bit
0 = Disable TCCCIF interrupt
1 = Enable TCCCIF interrupt
Bit 4 (TCCBIE): TCCBIF interrupt enable bit
0 = Disable TCCBIF interrupt
1 = Enable TCCBIF interrupt
Product Specification (V1.0) 06.16.2005
• 21
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
