19-10
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Bit 6
CNVMD
Figure 19.7.1 Conversion Data Alignment
This bit sets the A/D conversion mode.
1 (R/W): Continuous conversion mode
0 (R/W): One-time conversion mode
Bits 5
–
4
CNVTRG[1:0]
These bits select a trigger source to start A/D conversion.
Table 19.7.2 Trigger Source Selection
ADC12A_
n
TRG.CNVTRG[1:0] bits
Trigger source
0x3
#ADTRG
n
pin (external trigger)
0x2
Reserved
0x1
16-bit timer Ch.
k
underflow
0x0
ADC12A_
n
CTL.ADST bit (software trigger)
Bit 3
Reserved
Bits 2
–
0
SMPCLK[2:0]
These bits set the analog input signal sampling time.
Table 19.7.3 Sampling Time Settings
ADC12A_
n
TRG.SMPCLK[2:0] bits
Sampling time
(Number of CLK_T16_
k
cycles)
0x7
11 cycles
0x6
10 cycles
0x5
9 cycles
0x4
8 cycles
0x3
7 cycles
0x2
6 cycles
0x1
5 cycles
0x0
4 cycles
Summary of Contents for S1C31D50
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Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...