At91cap7 customizable mcus, Headquarters – Atmel AT91CAP7E User Manual

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REV.: 860/8543A-06/08/1K

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Atmel provides FPGA logic that decodes and encodes the bus traffic that flows between the FPGA and
the AT91CAP7E microcontroller. The logic blocks inside the FPGA are connected to the AT91CAP7E via
the AHB master and slave channels.

The AT91CAP7E is a standard microcontroller with an FPGA interface that makes the FPGA look and work
like it is on the internal bus on the MCU. Customers who are considering the AT91CAP7 customizable
MCU for their designs, frequently need a two-chip, no-NRE, FPGA-plus ARM7 solution as they are
gaining market momentum. The AT91CAP7E provides such a solution and offers an engineering-free
migration path to a lower cost, lower power customizable MCU when volume justifies it. The AT91CAP7E
is available in a 225 LFBGA package (13 x 13 x 1.4mm).

AT91CAP7 Customizable MCUs

Atmel’s AT91CAP7 customizable MCU is an ARM7-based microcontroller with a metal-programmable
(MP) block with 450K gates or the equivalent of 56K FPGA logic cells (LC). Any functionality that has
been implemented in an FPGA may be migrated directly to a CAP7 device with no special EDA tools
or customer-side engineering. Standard FPGA software tools are all that is necessary to implement
functions such as LCD controllers, DSP algorithms (e.g. GPS correlators, FFTs, FIR filters), and proprietary
customer IP. A AT91CAP7 implementation delivers as much as 8X better performance, consumes 98%
less static power, and costs about 30% less than the FPGA-plus-MCU implementation. The AT91CAP7
is available in multiple packages.

USB

PDC

256K ROM

POR

GPBR

POR

RTT

PIT

WDT

PLL

SHWDC

OSC

32K

AIC

PMC

Main

OSC

ICE

JTAG

AHB/APB Bridge

6-layer AHB Matrix

INTERFACE

FPGA

AHB/APB Bridge

CUSTOM MP

ARM7TDMI

Additional NON-AHB/APB Logic

FPGA

Seamless FPGA Interface

CAP7E to FPGA Interface

CAP7E

HZBT

AHBs

Dedicated

FPGA I/F

2 AHB Masters

4 AHB Slaves

14 APBs Slaves

2 PDC Channels

CAP7E-Ctrol

96KB SRAM

64KB SRAM

FPGA

INTERFACE

SRAM

USB

FIFO

POR

ADC

PLLB

LFT
OSC

PLLA

Battery

USB Tranceiver

OSC32

ARM

ROM

RAM

FPGA Interface

EBI

Peripheral DMA

Controller

SPI

PIO

TIMERS

USART

ADC

IRQ

SRAM

FPGA Interface