SH7059 Datasheet, PDF (584/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

18. A/D Converter
18.1.3 Pin Configuration
Table 18.1 summarizes the A/D converter's input pins. There are 32 analog input pins, AN0 to AN31. The 12 pins AN0 to
AN11 are A/D0 analog inputs, divided into three groups: AN0 to AN3 (group 0), AN4 to AN7 (group 1), and AN8 to
AN11 (group 2). The 12 pins AN12 to AN23 are A/D1 analog inputs, divided into three groups: AN12 to AN15 (group 3),
AN16 to AN19 (group 4), and AN20 to AN23 (group 5). The 8 pins AN24 to AN31 are A/D2 analog inputs, divided into
two groups: AN24 to AN27 (group 6), and AN28 to AN31 (group 7).
The ADTRG0 and ADTRG1 pins are used to provide A/D conversion start timing from off-chip. When the low level of a
pulse is applied to one of these pins, A/D0, A/D1, or A/D2 starts conversion.
The ADEND pin is an output used to monitor conversion timing when channel 31 is used in scan mode.
The AV_CC and AV_SS pins are power supply voltage pins for the analog section in A/D converter modules A/D0 to A/D2.
The AV_ref pin is the A/D converter module A/D0 to A/D2 reference voltage pin.
To maintain chip reliability, ensure that AV_CC = 5 V ±0.5 V and AV_SS = V_SS during normal operation, and never leave the
AV_CC and AV_SS pins open, even when the A/D converter is not being used.
The voltage applied to the analog input pins should be in the range AV_SS ≤ ANn ≤ AV_ref.
Rev.3.00 Mar. 12, 2008 Page 494 of 948
REJ09B0177-0300