C8051F560-TB Silicon Laboratories Inc, C8051F560-TB Datasheet - Page 55
![BOARD PROTOTYPE W/C8051F560](/photos/9/25/92557/c8051f560-tb_sml.jpg)
C8051F560-TB
Manufacturer Part Number
C8051F560-TB
Description
BOARD PROTOTYPE W/C8051F560
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.TOOLSTICK560DC.pdf
(302 pages)
Specifications of C8051F560-TB
Contents
Board
Processor To Be Evaluated
C8051F56x
Processor Series
C8051F56x
Interface Type
USB
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
1.8 V to 5.25 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F55x, C8051F56x, C8051F57x
For Use With
336-1691 - KIT DEVELOPMENT FOR C8051F560
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1694
- Current page: 55 of 302
- Download datasheet (3Mb)
6.3.2. Setting the Gain Value
The three programmable gain registers are accessed indirectly using the ADC0H and ADC0L registers
when the GAINEN bit (ADC0CF.0) bit is set. ADC0H acts as the address register, and ADC0L is the data
register. The programmable gain registers can only be written to and cannot be read. See Gain Register
Definition 6.1, Gain Register Definition 6.2, and Gain Register Definition 6.3 for more information.
The gain is programmed using the following steps:
1. Set the GAINEN bit (ADC0CF.0)
2. Load the ADC0H with the ADC0GNH, ADC0GNL, or ADC0GNA address.
3. Load ADC0L with the desired value for the selected gain register.
4. Reset the GAINEN bit (ADC0CF.0)
Notes:
In code, changing the value to 0.44 gain from the previous example looks like:
// in ‘C’:
ADC0CF |= 0x01;
ADC0H = 0x04;
ADC0L = 0x6C;
ADC0H = 0x07;
ADC0L = 0xA0;
ADC0H = 0x08;
ADC0L = 0x01;
ADC0CF &= ~0x01;
; in assembly
ORL ADC0CF,#01H
MOV ADC0H,#04H
MOV ADC0L,#06CH
MOV ADC0H,#07H
MOV ADC0L,#0A0H
MOV ADC0H,#08H
MOV ADC0L,#01H
ANL ADC0CF,#0FEH
1.
2.
An ADC conversion should not be performed while the GAINEN bit is set
Even with gain enabled, the maximum input voltage must be less than V
voltage of the signal after gain must be less than or equal to V
// GAINEN = 0
// GAINEN = 1
// Load the ADC0GNH address
// Load the upper byte of 0x6CA to ADC0GNH
// Load the ADC0GNL address
// Load the lower nibble of 0x6CA to ADC0GNL
// Load the ADC0GNA address
// Set the GAINADD bit
; GAINEN = 1
; Load the ADC0GNH address
; Load the upper byte of 0x6CA to ADC0GNH
; Load the ADC0GNL address
; Load the lower nibble of 0x6CA to ADC0GNL
; Load the ADC0GNA address
; Set the GAINADD bit
; GAINEN = 0
Rev. 1.1
C8051F55x/56x/57x
REF
.
REGIN
.
and the maximum
55
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