AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 181

• 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: -

Figure 18-37. Read Access in Standard Protocol using NWAIT
Note:
18.6.7.4
1768I–ATARM–09-Jul-09
synchronized
NWR0/NWE
NWR1/NUB
internally
A0/NLB
NWAIT
NWAIT
D[15:0]
A[22:1]
MCK
NRD
NCS
1. Read access, memory data bus width = 16, NWS = 5, WSEN = 1
Memory Access Example Waveforms
Figure 18-38 on page 182
write accesses to the various associated external memory devices. The configurations
described are shown in
Table 18-3.
Wait Delay Falling from NRD/NOE
0002C44
Figure Number
Figure 18-38
Figure 18-39
Figure 18-40
Figure 18-41
Figure 18-42
Figure 18-43
Figure 18-44
0003
Memory Access Waveforms
Table
through
Number of Wait
18-3.
States
0
1
1
0
1
1
0
Figure 18-44 on page 188
(1)
Bus Width
16
16
16
16
8
8
8
show the waveforms for read and
AT91RM9200
Size of Data Transfer
Half-word
Half-word
Word
Word
Word
Byte
Byte
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