AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 162

• Manufacturer Part Number: AT91SAM7SE256B-CUR
• Description: IC ARM7 MCU FLASH 256K 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE256B-CUR

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Processor Series: SAM7SE256
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 88
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: AT91SAM7SE256B
• Supply Current (max): 60 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

22.3
Table 22-1.
22.4
Table 22-2.
162
Name
NCS[7:0]
NRD
NWR0/NWE
NWR1/NUB
A0/NLB
A[22:1]
D[15:0]
NWAIT
A0
NWR0
NWR1
Multiplexed Signals
I/O Lines Description
Multiplexed Signals
SAM7SE512/256/32 Preliminary
I/O Lines Description
Static Memory Controller Multiplexed Signals
NLB
NWE
NUB
Description
Static Memory Controller Chip Select Lines
Read Signal
Write 0/Write Enable Signal
Write 1/Upper Byte Select Signal
Address Bit 0/Lower Byte Select Signal
Address Bus
Data Bus
External Wait Signal
Related Function
8-bit or 16-bit data bus, see
Byte-write or byte-select access, see
Byte-write or byte-select access, see
22.6.1.3 “Data Bus Width” on page
22.6.2.1 “Write Access Type” on page
22.6.2.1 “Write Access Type” on page
164.
Output
Output
Output
Output
Output
Output
Type
Input
I/O
165.
165.
6222F–ATARM–14-Jan-11
Active Level
Low
Low
Low
Low
Low
Low