AT32AP7002-CTUT Atmel, AT32AP7002-CTUT Datasheet - Page 543

• Manufacturer Part Number: AT32AP7002-CTUT
• Description: IC MCU 32BIT AVR32 196-CBGA
• Manufacturer: Atmel
• Series: AVR®32 AP7r

Specifications of AT32AP7002-CTUT

• Core Processor: AVR
• Core Size: 32-Bit
• Speed: 150MHz
• Connectivity: EBI/EMI, I²C, MMC, PS2, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²C, LCD, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: D/A 2x16b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 196-CBGA
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C, JTAG, PS2, SPI, SSC, UART, USART, USB
• Maximum Clock Frequency: 150 MHz
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Dac: 16 bit, 2 Channel
• Package: 196CTBGA
• Device Core: AVR32
• Family Name: AT32
• Maximum Speed: 150 MHz
• Operating Supply Voltage: 1.8|3.3 V
• For Use With: ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATNGW100 - KIT AVR32 NETWORK GATEWAYATSTK1000 - KIT STARTER FOR AVR32AP7000
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

28.8.2
Register Name:
Access Type:
Offset:
Reset Value:
• COUNT[11:0]: Refresh Timer Count
32054F–AVR32–09/09
31
23
15
7
-
-
-
This 12-bit field is loaded into a timer that generates the refresh pulse. Each time the refresh pulse is generated, a refresh burst
is initiated.
The value to be loaded depends on the SDRAMC clock frequency (CLK_SDRAMC), the refresh rate of the SDRAM device and
the refresh burst length where 15.6µs per row is a typical value for a burst of length one.
To refresh the SDRAM device, this 12-bit field must be written. If this condition is not satisfied, no refresh command is issued
and no refresh of the SDRAM device is carried out.
Refresh Timer Register
30
22
14
6
-
-
-
TR
Read/Write
0x04
0x00000000
29
21
13
5
-
-
-
28
20
12
4
-
-
-
COUNT[7:0]
27
19
11
3
-
-
26
18
10
2
-
-
COUNT[11:8]
25
17
9
1
-
-
AT32AP7002
24
16
8
0
-
-
543