AT91SAM7S32-AU-001 Atmel, AT91SAM7S32-AU-001 Datasheet - Page 340

• Manufacturer Part Number: AT91SAM7S32-AU-001
• Description: IC ARM7 MCU 32BIT 32K 48LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S32-AU-001

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• For Use With: AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: AT91SAM7S32-AU001

30.9.6
Figure 30-31. Read Write Flowchart in Slave Mode
340
AT91SAM7S Series Preliminary
Read Write Flowcharts
SADR + MSDIS + SVEN
Set the SLAVE mode:
Read Status Register
EOSACC = 1 ?
TXCOMP = 1 ?
SVACC = 1 ?
END
The flowchart shown in
in Slave mode. A polling or interrupt method can be used to check the status bits. The interrupt
method requires that the interrupt enable register (TWI_IER) be configured first.
GACC = 1 ?
Figure 30-31 on page 340
programming sequence
Read TWI_RHR
SVREAD = 0 ?
RXRDY= 0 ?
Decoding of the
Change SADR
Prog seq
OK ?
gives an example of read and write operations
GENERAL CALL TREATMENT
Write in TWI_THR
TXRDY= 1 ?
6175K–ATARM–30-Aug-10