W78ERD2 Datasheet, PDF (29/72 Pages) Winbond – 8-BIT MICROCONTROLLER

W78ERD2
PCA Module 3 Register
Bit:
7
6
5
4
- ECOM3 CAPP3 CAPN3
3
MAT3
2
TOG3
1
0
PWM3 ECCF3
Mnemonic: CCAPM3 Address: DDh
PCA Module 4 Register
Bit:
7
6
5
4
- ECOM4 CAPP4 CAPN4
3
MAT4
2
TOG4
1
0
PWM4 ECCF4
Mnemonic: CCAPM4 Address: DEh
Clock Control Register
Bit:
7
6
5
4
3
2
-
-
T2M T1M T0M
-
Mnemonic: CKCON
Address: DFh
1
0
-
MD
BIT NAME
FUNCTION
7
-
Reserve
6
-
Reserve
Timer 2 clock select: When T2M is set to 1, timer 2 uses a divide by 6 clock, and
5
T2M when set to 0 uses a divide by 12 clock. (This bit has no effect if bit 3 of Option-bits
is set to 1 to select 12 clocks/machine cycle)
Timer 1 clock select: When T1M is set to 1, timer 1 uses a divide by 6 clock, and
4
T1M when set to 0 uses a divide by 12 clock. (This bit has no effect if bit 3 of Option-
bits is set to 1 to select 12 clocks/machine cycle)
Timer 0 clock select: When T0M is set to 1, timer 0 uses a divide by 6 clock, and
3
T0M when set to 0 uses a divide by 12 clock. (This bit has no effect if bit 3 of Option-
bits is set to 1 to select 12 clocks/machine cycle)
2
-
Reserve
1
-
Reserve
Stretch MOVX select bits: This bit is used to select the stretch value for the MOVX
instruction. Using a variable MOVX length. Enables the user to access slower
memory devices or peripherals without the need for external circuits. The RD or
0
MD WR strobe will be stretched by the selected interval. All internal timing s are also
stretched by the same amount. This operation is transparent to the user. By
default, the stretch has value 1 cycle. If the user needs faster accessing, then
stretch value of 0 should be selected
Accumulator
Bit:
7
ACC.7
6
ACC.6
5
ACC.5
4
ACC.4
3
ACC.3
2
ACC.2
1
ACC.1
0
ACC.0
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Publication Release Date: April 20, 2005
Revision A4