em78p164n ELAN Microelectronics Corp, em78p164n Datasheet - Page 20

• Manufacturer Part Number: em78p164n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P164N
8-Bit Microcontroller with OTP ROM
14 •
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 (I/O Port Control Register)
Bits 7 ~ 6 (unused): unused bits
Bits 5 ~ 0 (IOC55 ~ IOC50): I/O direction control register
Bit 7
PST2
-
0
0
0
0
1
1
1
1
Bit 6
0: internal instruction cycle clock, P62 is a bidirectional I/O pin.
1: transition on the TCC pin
0: increment if the transition from low to high takes place on the TCC pin
1: increment if the 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 as Bit 2 ~ Bit 0.
0: defines the relative I/O pin as output
1: puts the relative I/O pin into high impedance
-
PST1
0
0
1
1
0
0
1
1
The P62/TCC/CinA- Pin Priority is as follows:
IOC55
Bit 5
CinA-
High
PST0
P62/TCC/CinA- Priority
IOC54
0
1
0
1
0
1
0
1
Bit 4
(This specification is subject to change without further notice)
Medium
NOTE
TCC
IOC53
Bit 3
Product Specification (V1.4) 05.28.2010
TCC Rate
1:2
1:4
1:8
1:16
1:32
1:64
1:128
1:256
IOC52
Bit 2
Low
P62
IOC51
Bit 1
IOC50
Bit 0