AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 195

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Figure 21-10. READ_MODE = 1: Data is sampled by SMC before the rising edge of NRD
21.8.2.2
Figure 21-11. READ_MODE = 0: Data is sampled by SMC before the rising edge of NCS
6438F–ATARM–21-Jun-10
Read is Controlled by NCS (READ_MODE = 0)
NBS0,NBS1,
NBS2,NBS3,
A0, A1
NBS0,NBS1,
NBS2,NBS3,
A0, A1
D[31:0]
D[31:0]
A[25:2]
A[25:2]
MCK
MCK
NRD
NCS
NRD
NCS
Figure 21-11
the falling edge of the NCS signal and remains valid until the rising edge of NCS. Data must be
sampled when NCS is raised. In that case, the READ_MODE must be set to 0 (read is controlled
by NCS): the SMC internally samples the data on the rising edge of Master Clock that generates
the rising edge of NCS, whatever the programmed waveform of NRD may be.
shows the typical read cycle of an LCD module. The read data is valid t
t
t
PACC
PACC
Data Sampling
Data Sampling
AT91SAM9G45
PACC
after
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