ADUC7039BCP6Z-RL Analog Devices Inc, ADUC7039BCP6Z-RL Datasheet - Page 57

• Manufacturer Part Number: ADUC7039BCP6Z-RL
• Description: Flash 64k ARM7 Dual 16-Bit ADC LIN I.C.
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC7xxxr

Specifications of ADUC7039BCP6Z-RL

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 20.48MHz
• Connectivity: LIN, SPI
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 6
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3.5 V ~ 18 V
• Data Converters: A/D 2x16b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 115°C
• Package / Case: 32-LFCSP
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

Table 43. LOCSTA MMR Bit Designations
A typical sequence for starting the LIN calibration is as follows.
LOCMIN = EXPECTED_LINBR_VALUE-0x20;
LOCMAX = EXPECTED_LINBR_VALUE+0x20;
LOCKEY = 0x1324;
LOCCON = 0x1;
An example to calibrate the low power oscillator using LIN communication:
LINCON = 0x800;
expected_baudrate = 0x10AB;
LOCMIN = EXPECTED_LINBR_VALUE-0x20;
LOCMAX = EXPECTED_LINBR_VALUE+0x20;
LOCKEY = 0x1324;
LOCCON = 0x1;
while ((LOCSTA & 0x05)!= 0x05){}
while ((LINBR<LOCMIN)||(LINBR>LOCMAX)){}
temp_trim = LOCVAL0;
LOCKEY = 0x1324;
LOCUSR0 = temp_trim;
LOCKEY = 0x1324;
LOCCON = 0;
Bit
7 to 3
2
1
0
Description
Reserved. Read 0.
Low power oscillator trim value modified.
This bit is set by hardware when the precision oscillator trim value is altered.
This bit is cleared by hardware on a read of LOCSTA MMR.
Precision oscillator trim value modified.
This bit is set by hardware when the precision oscillator trim value is altered.
This bit is cleared by hardware on a read of LOCSTA MMR.
Oscillator selected.
This bit is set by hardware to indicate that the low power oscillator is selected for calibration.
This bit is cleared by hardware to indicate that the precision oscillator is selected for calibration.
Rev. B | Page 57 of 92
//Define tolerance
//Define tolerance
//Wait for the correct baud rate
//Define tolerance
//Define tolerance
//Unlock key protection
//Enable calibration with step size = 1
//Enable LIN
//Correspond to 19200 bps
//Unlock key protection
//Enable calibration with step size = 1
//Wait for the trim value to be modified
//Store the trim value given
//Unlock key protection
//Write the trim value into the user MMR
//Unlock key protection
//Turn off the LIN calibration block
ADuC7039