AT91M43300-25CI Atmel, AT91M43300-25CI Datasheet - Page 16

• Manufacturer Part Number: AT91M43300-25CI
• Description: IC ARM7 MCU 144 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M43300-25CI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: WDT
• Number Of I /o: 58
• Program Memory Type: ROMless
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LFBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Figure 18-1. NWAIT Rising
Figure 18-2.
Note: 1.
16
MCKI
NWAIT
NCS
NWAIT
AT91M43300
MCKI
These numbers refer to the standard access cycles.
Number of Standard Wait States is Two
1
(1)
Standard Access Length with Two Wait States
If the NWAIT setup time is satisfied on the first rising edge of MCKI, the behavior is accurate.
The EBI operations are not affected when the NWAIT rises.
If the NWAIT setup time is satisfied on the following edges of MCKI and if at least one standard
wait state remains to be executed, the behavior is accurate. In the following example, the num-
ber of standard wait states is two. The NWAIT setup time on the second rising edge of MCKI
must be met.
NWAIT Setup before MCKI Rising (EB16)
EB16
2
(1)
3
1322B–ATARM–12-Dec-05
(1)