SAH-C515 SIEMENS [Siemens Semiconductor Group], SAH-C515 Datasheet - Page 103

• Manufacturer Part Number: SAH-C515
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Note :Generally, before entering the power-down mode, an A/D conversion in progress must be
A single A/D conversion is started by writing to SFR ADDAT with dummy data. A continuous
conversion is started under the following conditions :
When bit ADM is reset by software in continuous conversion mode, the just running A/D conversion
is stopped after its end.
6.4.2.2
This register holds the result of the 8-bit conversion. The most significant bit of the 8-bit conversion
result is bit 7 and the least significant bit is bit 0 of the ADDAT register. The data remains in ADDAT
until it is overwritten by the next converted data. ADDAT can be read or written under software
control. If the A/D converter of the C515 is not used, register ADDAT can be used as an additional
general purpose register.
Special Function Register ADDAT (Address D9 H )
Semiconductor Group
– By setting bit ADM during a running single A/D conversion
– By setting bit ADM when at least one A/D conversion has occured after the last reset
– By writing ADDAT with dummy data after bit ADM has been set before (if no A/D conversion
operation.
has occured after the last reset operation).
Bit No. MSB
D9 H
stopped. If a single A/D conversion is running, it must be terminated by polling the BSY bit or
waiting for the A/D conversion interrupt. In continuous conversion mode, bit ADM must be
cleared and the last A/D conversion must be terminated before entering the power-down
mode.
A/D Converter Data Register ADDAT
.7
7
.6
6
.5
5
.4
4
6-60
.3
3
On-Chip Peripheral Components
.2
2
.1
1
LSB
.0
0
Reset Value : 00 H
ADDAT
C515