E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 720

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 16 A/D Converter
16.4
Operation
The A/D converter has 10-bit resolution.
There are four operating modes—select or group, and single or scan—which can be combined
with buffer operation or simultaneous sampling operation.
A single channel is selected in select mode, and a number of channels in group mode. In select
mode, a single activation results in conversion on all the selected channels, while in scan mode, a
single activation results in conversion repeated until stopped by software. In buffer operation,
when conversion ends for the channel concerned, the previous conversion results are saved in a
buffer register. In simultaneous sampling operation, analog input voltages are sampled on two
channels simultaneously, and converted sequentially.
A software or timer conversion start trigger (TPU or 8-bit timer), or ADTRG input, can be
selected as the conversion start condition.
Either high-speed start mode or low-power conversion mode can be selected for A/D conversion
by means of the PWR bit.
The operating mode or input channel can be changed by rewriting ADCSR and ADCR while the
ADST bit is cleared to 0. After ADCSR and ADCR have been rewritten, A/D conversion is started
again when the ADST bit is set to 1. A change of operating mode or input channel and ADST bit
setting can be carried out simultaneously. A/D conversion can be stopped midway by clearing the
ADST bit to 0.
Rev. 5.00 Sep 14, 2006 page 690 of 1060
REJ09B0331-0500