Rev. 5.00, 12/03, page 532 of 1088
Table 14-4 A/D Conversion Time (Single Mode)
CKS1 = 0
CKS1 = 1
CKS = 0
CKS = 1
CKS = 0
CKS = 1
Item
Symbol
Min Typ Max
Min Typ Max
Min Typ Max
Min Typ Max
A/D conversion
start delay
t
D
18
—
33
4
—
5
10
—
17
6
—
9
Input sampling
time
t
SPL
—
127 —
—
15
—
—
63
—
—
31
—
A/D conversion
time
t
CONV
515 —
530
67
—
68
259 —
266
131 —
134
Note:
Values in the table are the number of states.
Table 14-5 A/D Conversion Time (Scan Mode)
CKS1
CKS
Conversion Time (States)
0
0
512 (Fixed)
1
64 (Fixed)
1
0
256 (Fixed)
1
128 (Fixed)
14.4.4
External Trigger Input Timing
A/D conversion can be externally triggered. When the TRGS1 and TRGS0 bits are set to B'11 in
ADCR, external trigger input is enabled at the
ADTRG
pin. A falling edge at the
ADTRG
pin sets
the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single and scan
modes, are the same as when the ADST bit has been set to 1 by software. Figure 14-6 shows the
timing.
Содержание H8S/2318 series
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