EM78P259N/260N
8-Bit Microprocessor with OTP ROM
Bit 3 & Bit 2 ( RCM1, RCM0): IRC mode selection bits
RCM 1
RCM 0
Frequency (MHz)
1
1
0
0
1
0
1
0
4 (default)
8
1
455kHz
6.1.8 R8 (AISR: ADC Input Select Register)
The AISR register defines the pins of Port 5 as analog inputs or as digital I/O,
individually.
7
6
5
4
3
2
1
0
–
–
–
–
ADE3
ADE2
ADE1
ADE0
Bit 7 ~ Bit 4: Not used
Bit 3 (ADE3 ): AD converter enable bit of P53 pin
0 = Disable ADC3, P53 acts as I/O pin
1 = Enable ADC3, acts as analog input pin
Bit 2 (ADE2 ): AD converter enable bit of P52 pin
0 = Disable ADC2, P52 acts as I/O pin
1 = Enable ADC2, acts as analog input pin
Bit 1 (ADE1 ): AD converter enable bit of P51 pin
0 = Disable ADC1, P51 acts as I/O pin
1 = Enable ADC1, acts as analog input pin
Bit 0 (ADE0 ): AD converter enable bit of P50 pin.
0 = Disable ADC0, P50 acts as I/O pin
1 = Enable ADC0, acts as analog input pin
Product Specification (V1.0) 06.16.2005
• 11
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
