761
Table 19-4 A/D Conversion Time (Single Mode)
CKS1 = 0
CKS1 = 1
CKS0 = 0
CKS0 = 1
CKS0 = 0
CKS0 = 1
Item
Symbol Min Typ Max Min Typ Max Min Typ Max Min Typ Max
A/D conversion start delay t
D
18
—
33
10
—
17
6
—
9
4
—
5
Input sampling time
t
SPL
—
127 —
—
63
—
—
31
—
—
15
—
A/D conversion time
t
CONV
515 —
530 259 —
266 131 —
134 67
—
68
Note:
Values in the table are the number of states.
Table 19-5 A/D Conversion Time (Scan Mode)
CKS1
CKS0
Conversion Time (State)
0
0
512 (Fixed)
1
256 (Fixed)
1
0
128 (Fixed)
1
64 (Fixed)
19.4.4
External Trigger Input Timing
A/D conversion can be externally triggered. When the TRGS1 and TRGS0 bits are set to 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 if the ADST bit has been set to 1 by software. Figure 19-6 shows the
timing.
ø
ADTRG
Internal trigger signal
ADST
A/D conversion
Figure 19-6 External Trigger Input Timing
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...