AT91SAM7S321-MU Atmel, AT91SAM7S321-MU Datasheet - Page 143
AT91SAM7S321-MU
Manufacturer Part Number
AT91SAM7S321-MU
Description
MCU ARM 32K HI SPD FLASH 64-QFN
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7S321-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
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
8K 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
AT91SAMx
Core
ARM7TDMI
Data Bus Width
32 bit
Data Ram Size
8 KB
Interface Type
I2C, I2S, SPI, SSC, TWI, UART, USB
Maximum Clock Frequency
55 MHz
Number Of Programmable I/os
32
Number Of Timers
10 bit
Operating Supply Voltage
1.8 V to 3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM7S-EK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7S321-MU
Manufacturer:
ATMEL
Quantity:
9 500
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21. AT91SAM7 Boot Program
21.1
21.2
6175K–ATARM–30-Aug-10
Description
Flow Diagram
The Boot Program integrates different programs permitting download and/or upload into the
different memories of the product.
First, it initializes the Debug Unit serial port (DBGU) and the USB Device Port.
SAM-BA
DBGU serial port.
The Boot Program implements the algorithm shown in
Figure 21-1. Boot Program Algorithm Flow Diagram with USB
Figure 21-2. Boot Program Algorithm Flow Diagram without USB
™
Boot is then executed. It waits for transactions either on the USB device or on the
Device
Setup
Device
Setup
AT91SAM7S Series Preliminary
Run SAM-BA Boot
USB Enumeration
No
Sequence Successful ?
Successful ?
AutoBaudrate
Yes
Figure 21-1
No
Yes
Sequence Successful ?
Run SAM-BA Boot
No
Run SAM-BA Boot
AutoBaudrate
or
Figure
Yes
21-2.
143
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