3069RF-ZTAT Datasheet, PDF (578/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Table 15.4 A/D Conversion Time (Single Mode)
CKS = 0
CKS = 1
Symbol
Min
Typ
Max Min
Typ
Max
Synchronization delay
t
D
6
—
9
4
—
5
Input sampling time
t_SPL
—
31
—
—
15
—
A/D conversion time
t_CONV
131
—
134 69
—
70
Note: Values in the table are numbers of states.
15.4.4 External Trigger Input Timing
A/D conversion can be externally triggered. When the TRGE bit is set to 1 in ADCR and the 8-bit
timer's ADTE bit is cleared to 0, external trigger input is enabled at the ADTRG pin. A high-to-
low transition 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 had been set to 1
by software. Figure 15.6 shows the timing.
φ
ADTRG
Internal trigger
signal
ADST
A/D conversion
Figure 15.6 External Trigger Input Timing
Rev. 5.0, 09/04, page 556 of 978