UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 678

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

<R>
(7) ZPD detection voltage setting registers (ZPDS0, ZPDS1)
676
The 8-bit ZPDS0, ZPDS1 registers set ZPD detection voltage and control ZPD analog input.
These registers can be read/written in 8-bit or 1-bit units.
This register is cleared by any reset.
Address: F9FCH
Symbol
ZPDS0
Address: F9FDH
Symbol
ZPDS1
Note 78K0/DF2 only.
Note
ZPDnPC
ZPDnS2
Figure 16-5. Format of ZPD detection voltage setting registers (ZPDS0, ZPDS1)
ZPD2PC
ZPD4PC
0
0
0
0
1
0
1
7
7
After reset: 00H
After reset: 00H
Other than above
Digital port/SM pin
ZPD analog input
ZPDnS1
ZPD2S2
ZPD4S2
CHAPTER 16 STEPPER MOTOR CONTROLLER/DRIVER
0
0
1
1
0
6
6
R/W
R/W
Preliminary User’s Manual U19748EJ1V0UD
ZPDnS0
ZPD2S1
ZPD4S1
0
1
0
1
0
5
5
SMV
SMV
SMV
SMV
SMV
Setting prohibited
ZPD2S0
ZPD4S0
DD
DD
DD
DD
DD
Analog input/digital port selection
4
4
3/100 = 0.15 V
5/100 = 0.25 V
7/100 = 0.35 V
9/100 = 0.45 V
11/100 = 0.55 V
0-point detection voltage setting for ZPDn (n = 1 to 4)
ZPD1PC
ZPD3PC
3
3
ZPD1S2
ZPD3S2
2
2
ZPD1S1
ZPD3S1
1
1
ZPD1S0
ZPD3S0
0
0