ATAM893T-TKQ Atmel, ATAM893T-TKQ Datasheet - Page 88

• Manufacturer Part Number: ATAM893T-TKQ
• Description: IC MON TIRE-PRESS ATARX9X SER
• Manufacturer: Atmel
• Series: MARC4r

Specifications of ATAM893T-TKQ

• Core Processor: MARC4
• Core Size: 4-Bit
• Speed: 4MHz
• Connectivity: SSI (2-Wire, 3 Wire)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: EEPROM
• Eeprom Size: 64 x 16
• Ram Size: 256 x 4
• Voltage - Supply (vcc/vdd): 1.8 V ~ 6.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SOIC (5.3mm Width), 20-SO, 20-SOEIAJ
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

6.2.3.1
6.2.3.2
6.2.3.3
6.2.3.4
6.2.3.5
88
ATAM893-D
Read One Data Byte
Read Two Data Bytes
Read n Data Bytes
Read Control Bytes
Initializing the Serial Interface to the EEPROM
A
To prevent unexpected behavior of the EEPROM and its interface it is good practice to use an
initialization sequence after any reset of the circuit. This is performed by writing:
to the serial interface. If the EEPROM acknowledges this sequence it is in a defined state. It may
be necessary to perform this sequence twice.
Start
Read low byte first,
address increment
Byte order
Read high byte first,
address decrement
Byte order
Start
Start
Start
acknowledge, N
Control byte
“FFh”
Control byte
Control byte
A
HB(R)
LB(R)
A
no acknowledge; HB: high byte; LB: low byte, R: row address
A
A
Data byte 1
Data byte 1
Data byte 1
HB(R)
LB(R)
A4
A4
MSB
MSB
N Stop
LB(R+1)
HB(R-1)
A
N
A
A3
A3
Data byte 2
Data byte 2
Stop
Row address
Row address
A2
A2
HB(R+1)
LB(R-1)
A - - -
A1
A1
N
Stop
A0
A0
- - -
- - -
Data byte n
C1
C1
0
1
LB(R+n)
HB(R-n)
N Stop
4680C–4BMCU–01/05
C0
C0
1
0
HB(R+n)
LB(R-n)
R/NW
R/NW
LSB
LSB
1
1