UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 672

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

670
Caution Bit 6 must be 0.
Power save mode preparation
Remark Note that the MCNTC0.PCE and MCNTC0.CAE bits must not be cleared to 0 by a single write
Before entering any power save mode the Stepper-C/D must be shut down in advance in order to minimize power
consumption.
Apply following sequence to shut down the Stepper-C/D:
1.
2.
Stop the counter CNT0 by setting MCNTC0.PCE = 0.
Disable the Stepper-C/D operation by setting MCNTC0.CAE = 0.
instruction. Perform two write instructions as shown above.
Sets the timer count clock for the timer counter
SMCL2
0
0
0
0
1
1
1
1
Figure 16-2. Format of Timer Mode Control Register (MCNTC0) (2/2)
SMCL1
CHAPTER 16 STEPPER MOTOR CONTROLLER/DRIVER
0
0
1
1
0
0
1
1
Preliminary User’s Manual U19748EJ1V0UD
SMCL0
0
1
0
1
0
1
0
1
f
f
f
f
f
f
f
f
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
/2
/2
/2
/2
/2
/2
/2
2
3
4
5
6
7
Selected timer count clock