AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 660

• Manufacturer Part Number: AT91RM9200-QI-002
• Description: IC ARM9 MCU 208 PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

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: -

38.4
38.4.1
Table 38-11. ETM Timing Characteristics
38.4.2
660
Symbol
1/(t
t
t
t
ETM
ETM
ETM
ETM
CPTCLK
CHTCLK
CLTCLK
CPTCLK
0
1
2
3
ETM Timings
)
AT91RM9200
Timings Data
Design Considerations
Parameter
Trace Clock Frequency
Trace Clock Period
TCLK High Half-period
TCLK Low Half-period
Data Signals Out Valid
before TCLK Rising Edge
Data Signals Out Valid after
TCLK Rising Edge
Data Signals Out Valid
before TCLK Falling Edge
Data Signals Out Valid after
TCLK Falling Edge
Table 38-11
“Conditions and Timings Computation” on page
Figure 38-11. ETM Signals
When designing a PCB, it is important to keep the differences between trace length of ETM sig-
nals as small as possible to minimize skew between them. In addition, crosstalk on the trace port
must be kept to a minimum as it can cause erroneous trace results. Stubs on these traces can
cause unpredictable responses, thus it is recommended to avoid stubs on the trace lines.
The TCLK line should be series-terminated as close as possible to the microcontroller pins.
The maximum capacitance presented by the trace connector, cabling and interfacing logic must
be less than 15 pF.
TPK[15:0]
TPS[2:0]
TSYNC
TCLK
shows timings relative to operating condition limits defined in the section
Conditions
C = 0 pF
C
C = 0 pF
C
DATA
DATA
derating
derating
t
CLTCLK
t
t
CPTCLK
CPTCLK
t
t
t
t
CHTCLK
CHTCLK
CLTCLK
CLTCLK
11.56
0.044
0.044
Min
/2 + 0.02
/2 - 0.02
- 1.06
- 0.51
- 0.49
- 1.03
t
CPTCLK
639.
1/(2
t
CHTCLK
2
x
Typ
x
t
CPPCK
t
CPPCK
)
86.54
Max
1768I–ATARM–09-Jul-09
Units
ns/pF
ns/pF
MHz
ns
ns
ns
ns
ns
ns
ns
38.1.1