HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 227

• Manufacturer Part Number: HD64F3670
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 14.3 A/D Conversion Time (Single Mode)
Item
A/D conversion start delay
Input sampling time
A/D conversion time
Note: All values represent the number of states.
14.4.4
A/D conversion can also be started by an external trigger input. When the TRGE bit is set to 1 in
ADCR, external trigger input is enabled at the
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 bit ADST has been set to 1 by software. Figure 14.3
shows the timing.
External Trigger Input Timing
ø
Internal trigger signal
ADST
Figure 14.3 External Trigger Input Timing
Symbol
t
t
t
D
SPL
CONV
Min
6
—
131
$'75*
Typ
—
31
—
CKS = 0
pin. A falling edge at the
Max
9
—
134
A/D conversion
Rev. 2.0, 03/02, page 203 of 298
Min
4
—
69
Typ
—
15
—
CKS = 1
$'75*
Max
5
—
70
input