AT91SAM7SE256B-AUR Atmel, AT91SAM7SE256B-AUR Datasheet - Page 360
![IC ARM7 MCU FLASH 256K 128-LQFP](/photos/39/71/397101/lqfp-128_sml.jpg)
AT91SAM7SE256B-AUR
Manufacturer Part Number
AT91SAM7SE256B-AUR
Description
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE256B-AUR
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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360
SAM7SE512/256/32 Preliminary
Figure 32-16. TWI Write Operation with Multiple Data Bytes with or without Internal Address
TWI_THR = data to send
Yes
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
- Internal address size
Set the Master Mode register:
TWI_CR = MSEN + SVDIS
Internal address size = 0?
Write ==> bit MREAD = 0
TWI_THR = Data to send
Set the Control register:
- Device slave address
Load Transmit register
- Transfer direction bit
Read Status register
Read Status register
(Needed only once)
- Master enable
TXCOMP = 1?
Yes
Data to send?
Yes
Set TWI clock
TXRDY = 1?
Yes
BEGIN
END
(if IADR used)
No
No
No
Set the internal address
TWI_IADR = address
6222F–ATARM–14-Jan-11
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