AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 632

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

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AT91SAM7X512/256/128 Preliminary
Table 38-24. EMAC RMII Specific Signals (Only for AT91SAM7X512)
Figure 38-9. EMAC RMII Mode
Symbol
EMAC
EMAC
EMAC
EMAC
EMAC
EMAC
EMAC
EMAC
EREFCK
ETX[1:0]
ERX[1:0]
ECRSDV
ETXEN
ERXER
21
22
23
24
25
26
27
28
Parameter
ETXEN toggling from EREFCK rising
ETX toggling from EREFCK rising
Setup for ERX from EREFCK
Hold for ERX from EREFCK
Setup for ERXER from EREFCK
Hold for ERXER from EREFCK
Setup for ECRSDV from EREFCK
Hold for ECRSDV from EREFCK
EMAC
EMAC
EMAC
23
25
27
EMAC
EMAC
EMAC
26
28
24
Min (ns)
4.9
4.4
0.5
1.5
0
0
2
0
EMAC
EMAC
21
22
6120H–ATARM–17-Feb-09
Max (ns)
14.2
15.9