AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 244
AT91RM9200-QI-002
Manufacturer Part Number
AT91RM9200-QI-002
Description
IC ARM9 MCU 208 PQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheets
1.AT91RM9200-EK.pdf
(41 pages)
2.AT91RM9200-DK.pdf
(2 pages)
3.AT91RM9200-QU-002.pdf
(701 pages)
Specifications of AT91RM9200-QI-002
Core Processor
ARM9
Core Size
16/32-Bit
Speed
180MHz
Connectivity
EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
POR
Number Of I /o
122
Program Memory Size
128KB (128K x 8)
Program Memory Type
ROM
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
208-MQFP, 208-PQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91RM9200-QI-002 SL383
Manufacturer:
Atmel
Quantity:
10 000
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22.7.2
22.7.2.1
22.7.2.2
244
AT91RM9200
Interrupt Latencies
External Interrupt Edge Triggered Source
External Interrupt Level Sensitive Source
Global interrupt latencies depend on several parameters, including:
This section addresses only the hardware resynchronizations. It gives details of the latency
times between the event on an external interrupt leading in a valid interrupt (edge or level) or the
assertion of an internal interrupt source and the assertion of the nIRQ or nFIQ line on the pro-
cessor. The resynchronization time depends on the programming of the interrupt source and on
its type (internal or external). For the standard interrupt, resynchronization times are given
assuming there is no higher priority in progress.
The PIO Controller multiplexing has no effect on the interrupt latencies of the external interrupt
sources.
Figure 22-6.
Figure 22-7.
• The time the software masks the interrupts.
• Occurrence, either at the processor level or at the AIC level.
• The execution time of the instruction in progress when the interrupt occurs.
• The treatment of higher priority interrupts and the resynchronization of the hardware signals.
External Interrupt Edge Triggered Source
External Interrupt Level Sensitive Source
(Negative Edge)
(Positive Edge)
IRQ or FIQ
IRQ or FIQ
nIRQ
MCK
nFIQ
(High Level)
(Low Level)
IRQ or FIQ
IRQ or FIQ
nIRQ
MCK
nFIQ
Maximum IRQ Latency = 4 Cycles
Maximum FIQ Latency = 4 Cycles
Latency = 3 Cycles
Latency = 3 cycles
Maximum IRQ
Maximum FIQ
1768I–ATARM–09-Jul-09
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