EM78P142SS10J/S Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM78P142SS10J/S Datasheet PDF : 96 Pages
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EM78P142
8-Bit Microprocessor with OTP ROM
6.1.7 R7 (Port 7)
Bit
7
6
5
4
3
2
1
0
EM78P142
‘0’
‘0’
‘0’
‘0’
‘0’
‘0’
I/O
I/O
ICE341N
C3
C2
C1
C0 RCM1 RCM0 I/O
I/O
Note: R7 is an I/O register.
Bit 7 ~ Bit 2:
[With EM78P142]: Unimplemented, read as ‘0’.
[With Simulator (C3~C0, RCM1, and RCM0)]: IRC calibration bits in IRC oscillator
mode. In IRC oscillator mode of ICE341N simulator, these
are the IRC mode selection bits and IRC calibration bits.
Bit 7 ~ Bit 4 (C3 ~ C0): Calibrator of internal RC mode
C3
C2
C1
C0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
1
1
1
1
1
1
0
1
1
0
1
1
1
0
0
1
0
1
1
1
0
1
0
1
0
0
1
1
0
0
0
Frequency (MHz)
(1-36%) × F
(1-31.5%) × F
(1-27%) × F
(1-22.5%) × F
(1-18%) × F
(1-13.5%) × F
(1-9%) × F
(1-4.5%) × F
F (default)
(1+4.5%) × F
(1+9%) × F
(1+135%) × F
(1+18%) × F
(1+22.5%) × F
(1+27%) × F
(1+31.5%) × F
Note: 1. Frequency values shown are theoretical and taken from an instance of a high frequency mode.
Hence, they are shown for reference only. Definite values depend on the actual process.
2. Similar way of calculation is also applicable for low frequency mode.
Bit 3 and Bit 2 (RCM1, RCM0): IRC mode selection bits
RCM 1
RCM 0
Frequency (MHz)
1
1
1
0
0
1
0
0
4 (default)
16
1
455kHz
Product Specification (V1.0) 01.25.2008
•9
(This specification is subject to change without further notice)
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