AT91SAM7XC512-CU Atmel, AT91SAM7XC512-CU Datasheet - Page 289

• Manufacturer Part Number: AT91SAM7XC512-CU
• Description: MCU ARM 512K HS FLASH 100-TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7XC512-CU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 128K 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: 100-TFBGA
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 128 KB
• Interface Type: MII, SPI, TWI
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 62
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM7X-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7XC-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7XC-EK - KIT EVAL FOR AT91SAM7XC256/128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 29-10. Master Write with One, Two or Three Bytes Internal Address and One Data Byte
Figure 29-11. Master Read with One, Two or Three Bytes Internal Address and One Data Byte
29.6.5.2
289
TWD
TWD
TWD
TWD
TWD
TWD
Three bytes internal address
Two bytes internal address
One byte internal address
Three bytes internal address
Two bytes internal address
One byte internal address
S
S
S
AT91SAM7XC512/256/128 Preliminary
S
S
S
10-bit Slave Addressing
DADR
DADR
DADR
DADR
DADR
DADR
W
W
W
For a slave address higher than 7 bits, the user must configure the address size (IADRSZ) and
set the other slave address bits in the internal address register (TWI_IADR). The two remaining
Internal address bytes, IADR[15:8] and IADR[23:16] can be used the same as in 7-bit Slave
Addressing.
Example: Address a 10-bit device (10-bit device address is b1 b2 b3 b4 b5 b6 b7 b8 b9 b10)
Figure 29-12
the use of internal addresses to access the device.
Figure 29-12. Internal Address Usage
1. Program IADRSZ = 1,
2. Program DADR with 1 1 1 1 0 b1 b2 (b1 is the MSB of the 10-bit address, b2, etc.)
3. Program TWI_IADR with b3 b4 b5 b6 b7 b8 b9 b10 (b10 is the LSB of the 10-bit
W
W
W
A
A
A
address)
A
A
A
S
A
R
IADR(23:16)
T
T
IADR(15:8)
IADR(7:0)
M
S
B
IADR(23:16)
below shows a byte write to an Atmel AT24LC512 EEPROM. This demonstrates
IADR(15:8)
Address
IADR(7:0)
Device
0
A
A
A
L
S
B
W
W
R
E
T
R
I
/
IADR(15:8)
A
A
A
IADR(7:0)
S
C
A
K
WORD ADDRESS
M
DADR
S
B
IADR(15:8)
IADR(7:0)
DATA
FIRST
A
A
R
IADR(7:0)
S
A
A
A
A
A
C
K
WORD ADDRESS
DADR
IADR(7:0)
P
SECOND
DATA
DATA
A
S
R
S
B
L
A
A
C
A
K
A
N
DADR
DATA
P
DATA
DATA
P
DATA
6209F–ATARM–17-Feb-09
R
N
A
C
K
A
P
A
N
O
S
T
P
P
P