r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 871

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

Table 17.5 A/D Conversion Time (Multi Mode and Scan Mode)
Note: Values in the table are the numbers of states.
17.4.7
A/D conversion can also be externally triggered. When the TRGS[3:0] bits in ADCSR are set to
B'1001, an external trigger is input to the ADTRG pin. The ADST bit in ADCSR is set to 1 at the
falling edge of the ADTRG pin, thus starting A/D conversion. If the TRGS[3:0] bits in both
ADCSR_0 and ADCSR_1 are set to B'1001 at this time, A/D conversion starts simultaneously on
A/D0 and A/D1. Other operations, regardless of the operating mode, are the same as when the
ADST bit has been set to 1 by software. Figure 17.6 shows the timing. However, when using the
ADTRG pin, keep the initial input to the pin high and do not drive it low until the conversion
starts.
CKS[1]
0
1
External Trigger Input Timing
Internal trigger signal
ADTRG
CKS[0]
0
1
0
ADST
Pφ
Figure 17.6 External Trigger Input Timing
Conversion Time (States)
128 (constant)
256 (constant)
512 (constant)
Rev. 2.00 Dec. 09, 2005 Page 847 of 1152
A/D conversion
Section 17 A/D Converter (ADC)
REJ09B0191-0200