em78p257 ELAN Microelectronics Corp, em78p257 Datasheet - Page 19

• Manufacturer Part Number: em78p257
• Description: 8-bit Microcontroller
• Manufacturer: ELAN Microelectronics Corp

This specification is subject to change without prior notice.
4. IOC80 ( TCC Control Register ):
• IOC5 , IOC6 and IOC7 are both readable and writable.
• Bit 7 (TCC2E): Control bit used to enable the second input of counter
• Bit 6 (TCC4E): Control bit used to enable the second input of counter
• Bit 5 (TCC6E): Control bit used to enable the second input of counter (for EM78P257B only)
• Bit 4 (TCCBE): Control bit is used to enable the most significant byte of counter
• Bit 3~Bit 0 Not used.
1 = If MOUSEN equal to ‘1’, pin 12 is defined as another input pin of TCCA. If MOUSEN equal to ‘0’,
pin 12 is a bi-directional I/O pin.
0 = Define P66 as a bi-directional I/O pin.
1 = If MOUSEN equal to ‘1’, pin 13 is defined as another input pin of TCCA. If MOUSEN equal to ‘0’,
pin 13 is a bi-directional I/O pin.
0 = Define P66 as a bi-directional I/O pin.
1 = If MOUSEN equal to ‘1’, pin 17 is defined as another input pin of TCCB. If MOUSEN equal to ‘0’,
pin 17 is a bi-directional I/O pin.
0 = Define P50 as a bi-directional I/O pin.
1 = If MOUSEN equal to ‘1’, pin 18 is defined as another input pin of TCCB. If MOUSEN equal to ‘0’,
pin 18 is a bi-directional I/O pin.
0 = Define P50 as a bi-directional I/O pin.
1 = If MOUSEN equal to ‘1’, pin 20 is defined as another input pin of TCCC. If MOUSEN equal to ‘0’,
pin 20 is a bi-directional I/O pin.
0 = Define P57 as a bi-directional I/O pin.
1 = Enable the most significant byte of TCCBH. TCCB is a 16-bits counter.
0 = Disable the most significant byte of TCCBH (default value). TCCB is an 8-bits counter.
For EM78P257A
For EM78P257B
For EM78P257A
For EM78P257B
For EM78P257B
TCC2E
7
TCC4E
6
TCC6E
5
TCCBE
4
19
3
-
2
-
1
EM78P257
-
07.27.2004 (V1.4)
OTP ROM
0
-