AT91SAM9M10-CU Atmel, AT91SAM9M10-CU Datasheet - Page 336

• Manufacturer Part Number: AT91SAM9M10-CU
• Description: IC MCU 16/32BIT ARM9 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9M10-CU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 133 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 16 bit
• Operating Supply Voltage: 1.65 V to 3.6 V
• 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, AT91SAM9M10-G45-EK
• Controller Family/series: AT91
• No. Of I/o's: 160
• Ram Memory Size: 64KB
• Cpu Speed: 400MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Cpu Family: AT91
• Device Core: ARM926EJ-S
• Device Core Size: 32b
• Frequency (max): 400MHz
• Total Internal Ram Size: 64KB
• # I/os (max): 160
• Number Of Timers - General Purpose: 7
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Operating Supply Voltage (max): 1.1/1.95/3.6V
• Operating Supply Voltage (min): 0.9/1.65/1.8/3V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 324
• Package Type: TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

25.4
25.5
336
Slow Clock RC Oscillator
Slow Clock Selection
AT91SAM9M10
Figure 25-2. Typical Slow Clock Crystal Oscillator Connection
The user has to take into account the possible drifts of the RC Oscillator. More details are given
in the section “DC Characteristics” of the product datasheet.
The AT91SAM9M10 slow clock can be generated either by an external 32,768 Hz crystal or by
the on-chip RC oscillator. The 32,768 Hz crystal oscillator can be bypassed by setting the bit
OSC32BYP to accept an external slow clock on XIN32.
The internal RC oscillator and the 32,768 Hz oscillator can be enabled by setting to 1, respec-
tively, RCEN bit and OSC32EN bit in the System Controller user interface. The OSCSEL
command selects the slow clock source.
Figure 25-3. Slow Clock Selection
RCEN, OSC32EN,OSCSEL and OSC32BYP bits are located in the Slow Clock Control Register
(SCKCR) located at address 0xFFFFFD50 in the backed up part of the System Controller and so
are preserved while VDDBU is present.
After a VDDBU power on reset, the default configuration is RCEN=1, OSC32EN=0 and OSC-
SEL=0, allowing the system to start on the internal RC oscillator.
The programmer controls the slow clock switching by software and so must take precautions
during the switching phase.
XOUT32
XIN32
XIN32
32,768 Hz
Crystal
Slow Clock
Clock Generator
Oscillator
On Chip
RC OSC
XOUT32
GNDPLL
Slow Clock
SLCK
OSCSEL
OSC32EN
OSC32BYP
RCEN
6355B–ATARM–21-Jun-10