em78p134n ELAN Microelectronics Corp, em78p134n Datasheet - Page 15

• Manufacturer Part Number: em78p134n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.6) 06.02.2010
(This specification is subject to change without further notice)
Bits 2 ~ 0 (TP2 ~ TP0): TMR clock prescaler bits
5.1.12 RB (CMPCON I : Comparator Control Register I)
Bits 7 ~ 0(XCOS1 ~ XCOS0): Comparator Select bits
*
5.1.13 RC (CMPCON II : Comparator Control Register II)
Bit 7 (CRS): Comparator reference voltage source select bit. When comparator
1: For Cin+ and Cin- definition, refer to RC control register.
ACOS1
XCOS1
Bit 7
Bit 7
CRS
TP2
0
1
0
1
0
0
0
0
1
1
1
1
ACOS0
CIRL2
XCOS0
Bit 6
Bit 6
0: Disable internal voltage reference, CIN+ external source (default
1: Enable internal voltage reference. P61/PWM/CIN+ pin acts as I/O.
disables, this bit must also be set to 0.
value) If the comparator is disabled, P61/PWM/CIN+ pin acts as I/O.
0
1
1
0
TP1
0
0
1
1
0
0
1
1
BCOS1
Comparator is not used. P50, P60, P61, P62, P66, and P67
functions as normal I/O pins.
Used as Comparator and P60 functions as normal I/O pin
Used as Comparator and P60 funcions as Comparator output pin
(CO)
CIRL1
Bit 5
Bit 5
The P60//INT/CO pin priority is as follows:
High
CO
*
1
TP0
1
0
1
0
1
0
1
0
P61/PWM/Cin+ Priority
BCOS0
CIRL0
Bit 4
Bit 4
Medium
NOTE
/INT
Function Description
CCOS1
CPOUT
Bit 3
Bit 3
8-Bit Microcontroller with OTP ROM
1:1 (default)
1:2
1:4
1:8
1:16
1:64
1:128
1:256
Prescale
CCOS0
Low
P60
Bit 2
Bit 2
COE
DCOS1
CRCS1
Bit 1
Bit 1
EM78P134N
*
DCOS0
CRCS0
1
Bit 0
Bit 0
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