ATA6830-PKH Atmel, ATA6830-PKH Datasheet - Page 7

• Manufacturer Part Number: ATA6830-PKH
• Description: IC DRIVER MOTOR STEPPER 28-QFN
• Manufacturer: Atmel

Specifications of ATA6830-PKH

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 1.1A
• Voltage - Supply: 7 V ~ 20 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Package / Case: -
• Voltage - Load: -
• Other names: ATA6830-PKHTR

4575C–BCD–05/03
Figure 6. Synchronization Sequence
Between two commands a pause has to be included. This is necessary for a clear rec-
ogition of a new message frame (command). Figure 7 shows the timing diagram of two
commands.
Figure 7. Message Frame and Space
Every command consists of 16 bits. They will be sent with two bytes. Figure 8 shows the
message frame. The high byte is sent first, immediately followed by the low byte. Every
byte starts with a start bit and ends with a parity bit and a stop bit. The first start bit (level
0) after a pause (level 1) indicates the beginning of a new message frame. The value of
the parity bit has to be odd, i.e., the crossfooting of the byte including the parity bit is
odd. If a data packet is not recognized due to a transmission error (parity error), the
entire command is rejected.
Figure 8. Command Bits
START
START
BIT
BIT
HIGH BYTE LOW BYTE
MESSAGE FRAME
7
6
5
8 DATA
HIGH BYTE
4
BITS
3
2
1
SYNCHRONIZATION PATTERN
0
PARITY
PARITY
MESSAGE FRAME
BIT
BIT
STOP
STOP
SPACE
BIT
BIT
START
START
BIT
BIT
7
6
5
8 DATA
LOW BYTE
4
BITS
3
2
1
ATA6830
0
PARITY
PARITY
BIT
BIT
STOP
STOP
BIT
BIT
7