AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 125

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

Table 20-1.
Notes:
Signal Name
VDDFLASH
VDDIO
VDDCORE
VDDPLL
GND
XIN
TST
PGMEN0
PGMEN1
PGMEN2
PGMNCMD
PGMRDY
PGMNOE
PGMNVALID
PGMM[3:0]
PGMD[15:0] or [7:0]
1. DATA[7:0] pertains to the SAM7S32/16.
2. PGMD[7:0] pertains to the SAM7S32/16.
Signal Description List
(2)
Function
Flash Power Supply
I/O Lines Power Supply
Core Power Supply
PLL Power Supply
Ground
Main Clock Input.
This input can be tied to GND. In this case, the
device is clocked by the internal RC oscillator.
Test Mode Select
Test Mode Select
Test Mode Select
Test Mode Select
Valid command available
0: Device is busy
1: Device is ready for a new command
Output Enable (active high)
0: DATA[15:0] or DATA[7:0]
1: DATA[15:0] or DATA[7:0]
Specifies DATA type (See
Bi-directional data bus
Table
(1)
(1)
is in input mode
is in output mode
20-2)
Clocks
Power
Test
PIO
Input/Output
Ground
Output
Output
Power
Power
Power
Power
Type
Input
Input
Input
Input
Input
Input
Input
Input
Active
SAM7S Series [DATASHEET]
Level
High
High
High
High
Low
Low
Low
Low
Pulled-up input at reset
Pulled-up input at reset
Comments
32KHz to 50MHz
Must be connected to VDDIO
Must be connected to VDDIO
Must be connected to VDDIO
Must be connected to GND
Pulled-up input at reset
Pulled-up input at reset
Pulled-up input at reset
Pulled-up input at reset
6175M–ATARM–26-Oct-12
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