IBM EM78P259N/260N 사용자 설명서
EM78P259N/260N
8-Bit Microprocessor with OTP ROM
10
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Product Specification (V1.2) 05.18.2007
(This specification is subject to change without further notice)
Bit 3 & Bit 2 (RCM1, RCM0):
IRC mode selection bits
RCM 1
RCM 0
Frequency (MHz)
1 1
4
(default)
1 0
8
0 1
1
0 0
455kHz
6.1.8 R8 (AISR: ADC Input Select Register)
The AISR register individually defines the pins of Port 5 as analog input or as digital I/O.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 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 functions as I/O pin
1
= Enable ADC3 to function as analog input pin
Bit 2 (ADE2):
AD converter enable bit of P52 pin
0
= Disable ADC2, P52 functions as I/O pin
1
= Enable ADC2 to function as analog input pin
Bit 1 (ADE1):
AD converter enable bit of P51 pin
0
= Disable ADC1, P51 functions as I/O pin
1
= Enable ADC1 to function as analog input pin
Bit 0 (ADE0):
AD converter enable bit of P50 pin.
0
= Disable ADC0, P50 functions as I/O pin
1
= Enable ADC0 to function as analog input pin