ADUC7034BCPZ-RL Analog Devices Inc, ADUC7034BCPZ-RL Datasheet - Page 122

• Manufacturer Part Number: ADUC7034BCPZ-RL
• Description: IC,Battery Management,LLCC,48PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC7xxxr

Specifications of ADUC7034BCPZ-RL

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 20.48MHz
• Connectivity: LIN, SPI, UART/USART
• Peripherals: POR, PSM, Temp Sensor, WDT
• Number Of I /o: 9
• Program Memory Size: 32KB (32K 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: 48-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADuC7034
LIN Frame Data Transmission and Reception
When the break symbol and synchronization byte have been
correctly received, data is transmitted and received via the
COMTX and COMRX MMRs after UART is configured to the
required baud rate. To configure UART for use with LIN requires
the use of the following UART MMRs:
•
•
•
•
COMDIV0: divisor latch (low byte).
COMDIV1: divisor latch (high byte).
COMDIV2: 16-bit fractional baud divider register. The
required values for COMDIV0, COMDIV1, and COMDIV2
are derived from the LHSVAL0 to generate the required
baud rate.
COMCON0: line control register. As soon as UART is
correctly configured, the LIN protocol for receiving and
transmitting data is identical to the UART specification.
BREAK
START
START
START
BIT
13
BIT
BIT
> = 14
t
BIT
t
BIT
BIT0
t
t
ID0
t
BIT
BIT
BIT
START
BIT
>1
t
BIT
BIT1
ID1
STA S0
Figure 49. LIN Identifier Byte Field
2
Figure 46. LIN Interface Timing
t
Figure 50. LIN Data Byte Field
Figure 48. LIN Sync Byte Field
BIT
Figure 47. LIN Break Field
BIT2
Rev. B | Page 122 of 136
ID2
SYNC
t
S1
BREAK
2
t
BIT
8
S2
BIT3
t
ID3
BIT
> 13
S3
t
2
BIT
t
BIT
BIT4
To manage data on the LIN bus requires use of the following
UART MMRs:
•
•
•
•
In addition, transmitting data on the LIN bus requires that the
relevant data be placed into COMTX, and reading data received
on the LIN bus requires the monitoring of COMRX. To ensure
that data is received or transmitted correctly, COMSTA0 should
be monitored. For more information, refer to the UART Serial
Interface and UART Register Definition sections.
Under software control, it is possible to multiplex the UART data
lines (TxD and RxD) to the external GPIO_7 and GPIO_8 pins.
For more information, refer to the GPIO Port1 Control Register
(GP1CON) section.
S4
ID4
S5
COMTX: 8-bit transmit register.
COMRX: 8-bit receive register.
COMCON0: line control register.
COMSTA0: line status register.
2
t
BIT
BIT5
ID5
S6
S7 STO
BIT6
P0
DELIMIT
BREAK
BIT7
P1
PROTECTED ID
STOP
STOP
STOP
BIT
BIT
BIT