AT91SAM7S256C-MU Atmel, AT91SAM7S256C-MU Datasheet - Page 124

• Manufacturer Part Number: AT91SAM7S256C-MU
• Description: IC ARM7 MCU 32BIT 256K 64-QFN
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S256C-MU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K 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: 64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
• Processor Series: AT91
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 64 KB
• Interface Type: SPI, TWI, USART, USB
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 5
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: AT91SAM7S256-MU; AT91SAM7S256-MU

20.2
20.2.1
124
Parallel Fast Flash Programming
AT91SAM7S Series Preliminary
Device Configuration
In Fast Flash Programming Mode, the device is in a specific test mode. Only a certain set of pins
is significant. Other pins must be left unconnected.
Figure 20-1. AT91SAM7S512/256/128/64/321/161 Parallel Programming Interface
Figure 20-2. AT91SAM7S32/16 Parallel Programming Interface
MODE[3:0]
MODE[3:0]
DATA[15:0]
0 - 50MHz
0 - 50MHz
DATA[7:0]
NVALID
NVALID
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
VDDIO
NCMD
NCMD
GND
GND
NOE
NOE
RDY
RDY
PGMD[15:0]
TST
PGMEN0
PGMEN1
PGMEN2
PGMNCMD
PGMRDY
PGMNOE
PGMNVALID
PGMM[3:0]
XIN
TST
PGMEN0
PGMEN1
PGMEN2
PGMNCMD
PGMRDY
PGMNOE
PGMNVALID
PGMM[3:0]
XIN
PGMD[7:0]
VDDCORE
VDDIO
VDDPLL
VDDFLASH
GND
VDDCORE
VDDIO
VDDPLL
VDDFLASH
GND
6175K–ATARM–30-Aug-10