AT91SAM9260B-QU Atmel, AT91SAM9260B-QU Datasheet - Page 259
AT91SAM9260B-QU
Manufacturer Part Number
AT91SAM9260B-QU
Description
IC ARM9 MCU 208-PQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM9260B-QU
Core Processor
ARM9
Core Size
16/32-Bit
Speed
180MHz
Connectivity
EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
POR, WDT
Number Of I /o
96
Program Memory Size
32KB (32K x 8)
Program Memory Type
ROM
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
208-MQFP, 208-PQFP
Package
208PQFP
Device Core
ARM926EJ-S
Family Name
91S
Maximum Speed
180 MHz
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Number Of Programmable I/os
96
Interface Type
EBI/Ethernet/SPI/TWI/UART/USART/USB
On-chip Adc
4-chx10-bit
Number Of Timers
6
Processor Series
AT91SAMx
Core
ARM926EJ-S
Data Ram Size
8 KB
Maximum Clock Frequency
180 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM9260-EK
Minimum Operating Temperature
- 40 C
Cpu Family
AT91
Device Core Size
32b
Frequency (max)
180MHz
Total Internal Ram Size
8KB
# I/os (max)
96
Number Of Timers - General Purpose
6
Operating Supply Voltage (typ)
1.8/3.3V
Operating Supply Voltage (max)
1.95/3.6V
Operating Supply Voltage (min)
1.65/3V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
208
Package Type
PQFP
For Use With
AT91SAM9260-EK - KIT EVAL FOR AT91SAM9260AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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6221I–ATARM–17-Jul-09
5. Selection of Master Clock and Processor Clock
• If a new value for CSS field corresponds to PLL Clock,
The OUTB field is used to select the PLL B output frequency range.
The MULB field is the PLL B multiplier factor. This parameter can be programmed between
0 and 2047. If MULB is set to 0, PLL B will be turned off, otherwise the PLL B output fre-
quency is PLL B input frequency multiplied by (MULB + 1).
The PLLBCOUNT field specifies the number of slow clock cycles before LOCKB bit is set in
the PMC_SR register after CKGR_PLLBR register has been written.
Once the PMC_PLLB register has been written, the user must wait for the LOCKB bit to be
set in the PMC_SR register. This can be done either by polling the status register or by wait-
ing the interrupt line to be raised if the associated interrupt to LOCKB has been enabled in
the PMC_IER register. All parameters in CKGR_PLLBR can be programmed in a single
write operation. If at some stage one of the following parameters, MULB, DIVB is modified,
LOCKB bit will go low to indicate that PLL B is not ready yet. When PLL B is locked, LOCKB
will be set again. The user is constrained to wait for LOCKB bit to be set before using the
PLL A output clock.
The USBDIV field is used to control the additional divider by 1, 2 or 4, which generates the
USB clock(s).
Code Example:
If PLL B and divider B are enabled, the PLL B input clock is the main clock. PLL B output
clock is PLL B input clock multiplied by 5. Once CKGR_PLLBR has been written, LOCKB bit
will be set after eight slow clock cycles.
The Master Clock and the Processor Clock are configurable via the PMC_MCKR register.
The CSS field is used to select the Master Clock divider source. By default, the selected
clock source is slow clock.
The PRES field is used to control the Master Clock prescaler. The user can choose between
different values (1, 2, 4, 8, 16, 32, 64). Master Clock output is prescaler input divided by
PRES parameter. By default, PRES parameter is set to 1 which means that master clock is
equal to slow clock.
The MDIV field is used to control the Master Clock prescaler. It is possible to choose
between different values (0, 1, 2). The Master Clock output is Processor Clock divided by 1,
2 or 4, depending on the value programmed in MDIV. By default, MDIV is set to 0, which
indicates that the Processor Clock is equal to the Master Clock.
Once the PMC_MCKR register has been written, the user must wait for the MCKRDY bit to
be set in the PMC_SR register. This can be done either by polling the status register or by
waiting for the interrupt line to be raised if the associated interrupt to MCKRDY has been
enabled in the PMC_IER register.
The PMC_MCKR register must not be programmed in a single write operation. The pre-
ferred programming sequence for the PMC_MCKR register is as follows:
write_register(CKGR_PLLBR,0x00040805)
AT91SAM9260
259
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