em78p134n ELAN Microelectronics Corp, em78p134n Datasheet - Page 19

• 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)
Bit 5 (TS): TCC signal source
Bit 4 (TE): TCC signal edge
Bit 3 (PSTE): Prescaler enable bit for TCC
Bits 2 ~ 0 (PST2 ~ PST0): TCC prescaler bits
5.2.3 IOC5 (Unused)
5.2.4 IOC6 (I/O Port Control Register)
Bits 7 ~ 0 (IOC67 ~ IOC60): I/O direction control register
IOC67
Bit 7
PST2
0
0
0
0
1
1
1
1
IOC66
Bit 6
0: internal instruction cycle clock, P62 is a bidirectional I/O pin.
1: transition on the TCC pin
0: increment if a transition from low to high takes place on the TCC pin
1: increment if a transition from high to low takes place on the TCC pin
0: prescaler disable bit. TCC rate is 1:1.
1: prescaler enable bit. TCC rate is set at Bit 2 ~ Bit 0.
1: puts the relative I/O pin into high impedance
0: defines the relative I/O pin as output
PST1
0
0
1
1
0
0
1
1
The P62/TCC/CinA- Pin Priority is as follows:
IOC65
Bit 5
CinA-
High
P62/TCC/CinA- Priority
PST0
IOC64
0
1
0
1
0
1
0
1
Bit 4
Medium
NOTE
TCC
IOC63
Bit 3
8-Bit Microcontroller with OTP ROM
TCC Rate
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
Low
IOC62
P62
Bit 2
IOC61
Bit 1
EM78P134N
IOC60
Bit 0
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