AT91M63200-25AU Atmel, AT91M63200-25AU Datasheet - Page 37

• Manufacturer Part Number: AT91M63200-25AU
• Description: IC MCU ARM7 176-TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M63200-25AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 58
• Program Memory Type: OTP
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-TQFP, 176-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

MPI Connection
The MPI must be connected to the bus of the external pro-
cessor as a 1K byte 16-bit memory.
As illustrated in Figure 33, below, the MPI only supports
16-bit data transfers by connecting the basic signals:
MPI_A9 to MPI_A1, MPI_D15 to MPI_D0, MPI_NCS and
MPI_RNW.
Connection of the MPI_NOE signal is not mandatory, but
gives the advantage of driving the bus only during the data
Figure 33. MPI Connection to External Processor
MPI_D0 - MPI_D15
MPI_A1 - MPI_A9
M63X00
MPI
MPI_RNW
MPI_NCS
MPI_BG
MPI_BR
9
16
Decoder
Address
PIO Output
PIO Input
Address Bus
Data Bus
R/W
Processor
External
access while the chip select line is active, in order to avoid
any risk of contention on the data bus.
The connection of the MPI_NUB and MPI_NLB signals is
not mandatory, but allows the external processor to per-
form byte accesses.
The connection with the interface with an external proces-
sor varies depending on the bus of the processor. Figure
34, below, shows how to connect the MPI to the External
Bus Interface of an AT91 as an additional example.
Figure 34. MPI Connection to an AT91 Microcontroller
MPI_D0 - MPI_D15
MPI_A1 - MPI_A9
PB0/MPI_NOE
PB2/MPI_NUB
PB1/MPI_NLB
M63X00
MPI
MPI_RNW
MPI_NCS
MPI_BG
MPI_BR
AT91M63200
PIO Output
PIO Input
Address Bus
Data Bus
NCSx
NWE/NWR0
NOE/NRD
A0/NLB
NUB/NWR1
Microcontroller
AT91
EBI
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