M16C28 Datasheet, PDF (240/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
15. A/D Converter
A/D Trigger Control Register ^{(1, 2)}
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
ADTRGCON
Address
03D216
After Reset
0016
Bit Symbol
Bit Name
SSE
A/D Operation Mode
Select Bit 2
Function
RW
0 : Other than simultaneous sample sweep
RW
mode or delayed trigger mode 0,1
1 : Simultaneous sample sweep mode or
delayed trigger mode 0,1
DTE
A/D Operation Mode
Select Bit 3
0 : Other than delayed trigger mode 0,1
1 : Delayed trigger mode 0,1
RW
HPTRG0 ^{AN0 Trigger Select Bit}
Function varies with each operation mode
RW
HPTRG1 ^{AN1 Trigger Select Bit}
Function varies with each operation mode
RW
(b7-b4)
Nothing is assigned. When write, set to “0”.
When read, its content is “0”.
NOTES:
1. If the ADTRGCON register is rewritten during A/D conversion, the conversion result will be indeterminate.
2. Set “0016” in this register in one-shot mode, repeat mode, single sweep mode, repeat sweep mode 0 and repeat
sweep mode 1.
Figure 15.3 ADTRGCON Register
Table 15.2 A/D Conversion Frequency Select
CKS2
CKS1
CKS0
ØAD
0
0
0
Divided-by-4 of fAD
0
0
1
Divided-by-2 of fAD
0
1
0
fAD
0
1
1
1
0
0
Divided-by-12 of fAD
1
0
1
Divided-by-6 of fAD
1
1
0
Divided-by-3 of fAD
1
1
1
NOTE:
1. Set the φAD frequency to 10 MHz or less (12 MHz or less in M16C/28B) The selected φAD the
ADCON0 register, CKS1 bit in the ADCON1 register, and the CKS2 bit in the ADCON2 register.
Rev. 2.00 Jan. 31, 2007 ^{page 220} of 385
REJ09B0047-0200