AT91RM9200-QU-002 Atmel, AT91RM9200-QU-002 Datasheet - Page 406

• Manufacturer Part Number: AT91RM9200-QU-002
• Description: IC ARM9 MCU 208 PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-QU-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Processor Series: AT91Rx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: 2-Wire, EBI, I2S, SPI, UART, USART
• Maximum Clock Frequency: 180 MHz
• Number Of Programmable I/os: 122
• Number Of Timers: 10 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91RM9200-EK
• Minimum Operating Temperature: - 40 C
• Eeprom Memory: 0 Bytes
• Input Output: 122
• Interface: EBI/EMI, UART/USART
• Ios: 122
• Memory Type: ROM
• Number Of Bits: 32
• Package Type: 208-pin PQFP
• Programmable Memory: 128K Bytes
• Timers: 3-16-bit
• Voltage, Range: 1.65-1.95 V
• Cpu Family: 91R
• Device Core: ARM920T
• Device Core Size: 32b
• Frequency (max): 180MHz
• Total Internal Ram Size: 16KB
• # I/os (max): 122
• Number Of Timers - General Purpose: 6
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (max): 1.95/3.6V
• Operating Supply Voltage (min): 1.65/3V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 208
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

29.6.5
Register Name:
Access Type:
• TXCOMP: Transmission Completed
0 = In master, during the length of the current frame. In slave, from START received to STOP received.
1 = When both holding and shifter registers are empty and STOP condition has been sent (in Master) or when MSEN is set
(enable TWI).
• RXRDY: Receive Holding Register Ready
0 = No character has been received since the last TWI_RHR read operation.
1 = A byte has been received in the TWI_RHR since the last read.
• TXRDY: Transmit Holding Register Ready
0 = The transmit holding register has not been transferred into shift register. Set to 0 when writing into TWI_THR register.
1 = As soon as data byte is transferred from TWI_THR to internal shifter or if a NACK error is detected, TXRDY is set at the
same time as TXCOMP and NACK. TXRDY is also set when MSEN is set (enable TWI).
• OVRE: Overrun Error
0 = TWI_RHR has not been loaded while RXRDY was set
1 = TWI_RHR has been loaded while RXRDY was set. Reset by read in TWI_SR when TXCOMP is set.
• UNRE: Underrun Error
0 = No underrun error
1 = No valid data in TWI_THR (TXRDY set) while trying to load the data shifter. This action automatically generated a
STOP bit in Master Mode. Reset by read in TWI_SR when TXCOMP is set.
• NACK: Not Acknowledged
0 = Each data byte has been correctly received by the far-end side TWI slave component.
1 = A data byte has not been acknowledged by the slave component. Set at the same time as TXCOMP. Reset after read.
406
UNRE
31
23
15
–
–
–
7
AT91RM9200
TWI Status Register
OVRE
30
22
14
TWI_SR
Read-only
–
–
–
6
29
21
13
–
–
–
5
–
28
20
12
–
–
–
4
–
27
19
11
–
–
–
3
–
TXRDY
26
18
10
–
–
–
2
RXRDY
25
17
–
–
9
–
1
1768I–ATARM–09-Jul-09
TXCOMP
NACK
24
16
–
–
8
0