DSPIC30F6010 MICROCHIP [Microchip Technology], DSPIC30F6010 Datasheet - Page 129

• Manufacturer Part Number: DSPIC30F6010
• Description: High-Performance Digital Signal Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

20.0
The10-bit high-speed analog-to-digital converter (A/D)
allows conversion of an analog input signal to a 10-bit
digital number. This module is based on a Successive
Approximation Register (SAR) architecture, and pro-
vides a maximum sampling rate of 500 ksps. The A/D
module has 16 analog inputs which are multiplexed into
four sample and hold amplifiers. The output of the sam-
ple and hold is the input into the converter, which gen-
erates the result. The analog reference voltages are
software selectable to either the device supply voltage
(AV
pin. The A/D converter has a unique feature of being
able to operate while the device is in Sleep mode.
 2004 Microchip Technology Inc.
Note: This data sheet summarizes features of this group
of dsPIC30F devices and is not intended to be a complete
reference source. For more information on the CPU,
peripherals, register descriptions and general device
functionality, refer to the dsPIC30F Family Reference
Manual (DS70046).
DD
/AV
10-BIT HIGH SPEED ANALOG-
TO-DIGITAL CONVERTER (A/D)
MODULE
SS
) or the voltage level on the (V
REF
+/V
REF
Preliminary
-)
The A/D module has six 16-bit registers:
• A/D Control Register1 (ADCON1)
• A/D Control Register2 (ADCON2)
• A/D Control Register3 (ADCON3)
• A/D Input Select Register (ADCHS)
• A/D Port Configuration Register (ADPCFG)
• A/D Input Scan Selection Register (ADCSSL)
The ADCON1, ADCON2 and ADCON3 registers con-
trol the operation of the A/D module. The ADCHS reg-
ister selects the input channels to be converted. The
ADPCFG register configures the port pins as analog
inputs or as digital I/O. The ADCSSL register selects
inputs for scanning.
The block diagram of the A/D module is shown in
Figure 20-1.
Note:
The
SMPI<3:0>, BUFM and ALTS bits, as well
as the ADCON3 and ADCSSL registers,
must not be written to while ADON = 1.
This would lead to indeterminate results.
dsPIC30F6010
SSRC<2:0>,
ASAM,
DS70119D-page 127
SIMSAM,