AT91M55800A-33CJ Atmel, AT91M55800A-33CJ Datasheet - Page 66

• Manufacturer Part Number: AT91M55800A-33CJ
• Description: IC ARM MCU 16BIT 176BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M55800A-33CJ

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 58
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Processor Series: AT91Mx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: EBI, SPI, USART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 58
• Number Of Timers: 10 bit
• Operating Supply Voltage: 3 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: AT91EB55
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 8 bit, 2 Channel
• Cpu Family: AT91
• Device Core: ARM7TDMI
• Device Core Size: 32b
• Frequency (max): 33MHz
• Program Memory Size: Not Required
• Total Internal Ram Size: 8KB
• # I/os (max): 58
• Number Of Timers - General Purpose: 6
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 176
• Package Type: BGA
• For Use With: AT91EB55 - KIT EVAL FOR ARM AT91M55800A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

12.9.7
Register Name:
Access Type:
Reset Value:
Offset:
• MOSCBYP: Main Oscillator Bypass (Code Label APMC_MOSC_BYP)
0 = Crystal must be connected between XIN and XOUT.
1 = External clock must be provided on XIN.
• MOSCEN: Main Oscillator Enable (Code Label APMC_MOSC_EN)
0 = Main Oscillator is disabled.
1 = Main Oscillator is enabled.
Note:
• MCKODS: Master Clock Output Disable (Code Label APMC_MCKO_DIS)
0 = The MCKO pin is driven with the Master Clock (MCK).
1 = The MCKO pin is tri-stated.
• PRES: Prescaler Selection
66
0
0
0
0
1
1
1
1
31
23
15
–
7
–
When operating in Bypass Mode, the Main Oscillator must be disabled. MOSCEN and MOSCBYP bits must never be set
together.
AT91M5880A
APMC Clock Generator Mode Register
CSS
PRES
0
0
1
1
0
0
1
1
30
22
14
APMC_CGMR
Read/Write
0x0
0x20
–
6
0
1
0
1
0
1
0
1
PRES
Prescaler Selected
None. Prescaler Output is the selected clock.
Selected clock is divided by 2
Selected clock is divided by 4
Selected clock is divided by 8
Selected clock is divided by 16
Selected clock is divided by 32
Selected clock is divided by 64
Reserved
29
21
13
5
28
20
12
4
OSCOUNT
27
19
11
–
3
PLLCOUNT
MUL
MCKODS
26
18
10
2
Code Label
APMC_PRES_NONE
APMC_PRES_DIV2
APMC_PRES_DIV4
APMC_PRES_DIV8
APMC_PRES_DIV16
APMC_PRES_DIV32
APMC_PRES_DIV64
–
MOSCEN
25
17
9
1
1745F–ATARM–06-Sep-07
MOSCBYP
24
16
8
0