HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 454

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 14 A/D Converter
14.1.3
Pin Configuration
Table 14.1 summarizes the A/D converter’s input pins. There are 16 analog input pins, AN0 to
AN15. 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 four pins AN12 to AN15 are
A/D1 analog inputs, comprising analog input group 3.
The ADTRG pin is used to provide A/D conversion start timing from off-chip. When a low-level
pulse is applied to this pin, the A/D converter starts conversion. This pin is shared by A/D0 and
A/D1.
The ADEND pin is an output used to monitor conversion timing when channel 15 is used in scan
mode.
The AV
and AV
pins are power supply voltage pins for the analog section in the A/D
CC
SS
converter. The AV
pin is the A/D converter reference voltage pin. These pins are also shared by
ref
A/D0 and A/D1.
To maintain chip reliability, ensure that AV
= V
±10% and AV
= V
during normal
CC
CC
SS
SS
operation, and never leave the AV
and AV
pins open, even when the A/D converter is not
CC
SS
being used.
The voltage applied to the analog input pins should be in the range AV
ANn
AV
.
SS
ref
Rev. 5.00 Jan 06, 2006 page 434 of 818
REJ09B0273-0500