AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 90

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

Specifications of AT91RM9200-QI-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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

13.3.3.4
90
AT91RM9200
Serial Two-wire EEPROM Download
Generally, serial EEPROMs have no identification code. The bootloader checks for an acknowl-
edgment on the first read. The device address on the two-wire bus must be 0x0. The bootloader
supports the devices listed in
Table 13-3.
Figure 13-7. Serial Two-Wire EEPROM Download
AT24C16A
AT24C164
AT24C128
AT24C256
AT24C512
AT24C32
AT24C64
Device
Supported EEPROM Devices
Restore the reset value for the peripherals.
Set the PC to 0 and perform the REMAP
Read the first 8 instructions (32 bytes).
to jump to the downloaded application
Read the Two-Wire EEPROM into the
(code size to read in vector 6)
Decode the sixth ARM vector
(except vector 6) are LDR
or Branch instruction ?
Send Read command
internal SRAM
Device ACK ?
8 vectors
Table
Start
End
Yes
Yes
13-3.
128 Kbits
256 Kbits
528 Kbits
16 Kbits
16 Kbits
32 Kbits
64 Kbits
Size
No
No
Only for Device with EBI integrated
8-bits parallel memory
Only for Device without
Memory Uploader
EBI integrated
Download
128 bytes page write
16 bytes page write
16 bytes page write
32 bytes page write
32 bytes page write
64 bytes page write
64 bytes page write
Organization
1768I–ATARM–09-Jul-09