AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 93

• 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

18. Memory Controller (MC)
18.1
The Memory Controller (MC) manages the ASB bus and controls accesses requested by the masters, typically the
ARM7TDMI processor and the Peripheral DMA Controller. It features a bus arbiter, an address decoder, an abort status, a
misalignment detector and an Embedded Flash Controller.
18.2
Figure 18-1. Memory Controller Block Diagram
6120H–ATARM–17-Feb-09
Overview
Block Diagram
ARM7TDMI
Processor
Peripheral
Controller
EMAC
DMA
DMA
Abort
Peripheral N
Peripheral 0
Peripheral 1
Memory Controller
Arbiter
Bus
AT91SAM7X512/256/128 Preliminary
ASB
Misalignment
Interface
Detector
Status
Abort
User
Bridge
APB
APB
Decoder
Address
Embedded
Controller
Flash
From Master
to Slave
Internal
Internal
Flash
RAM
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