HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 531

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Table 14.4 A/D Conversion Time (Single Mode)
Item
A/D conversion start delay
Input sampling time
A/D conversion time
Note: Values in the table are the number of states.
14.4.4
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 14.6 shows the
timing.
518
ø
ADTRG
ADST
Internal trigger signal
External Trigger Input Timing
Figure 14.6 External Trigger Input Timing
Symbol
t
t
t
D
SPL
CONV
Min
10
—
259
CKS = 0
Typ
—
63
—
Max
17
—
266
A/D conversion
Min
6
—
131
CKS = 1
Typ
—
31
—
Max
9
—
134