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参数资料
| 型号： | IDT79R3081-40DL8 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 40 MHz, RISC PROCESSOR, PQCC84 |
| 封装： | 0.050 INCH PITCH, HEAT SINK, PLASTIC, LCC-84 |
| 文件页数： | 3/41页 |
| 文件大小： | 893K |
| 代理商： | IDT79R3081-40DL8 |
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5.5
11
IDT79R3081 RISController
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN NAME
I/O
DESCRIPTION
Int(5:3)
I
Processor Interrupt: During normal operation, these signals are logically the same as the
Int(5:0) SInt(2:0)
signals of the R3000. During processor reset, these signals perform mode initialization of the CPU, but in a
different (simpler) fashion than the interrupt signals of the R3000.
There are two types of interrupt inputs: the
SInt inputs are internally synchronized by the processor, and may
be driven by an asynchronous external agent. The direct interrupt inputs are not internally synchronized, and
thus must be externally synchronized to the CPU. The direct interrupt inputs have one cycle lower latency than
the synchronized interrupts. Note that the interrupt used by the on-chip FPA will not be monitored externally.
ClkIn
I
Master Clock Input: This input clock can be provided at the execution frequency of the CPU (1x clock mode)
or at twice that frequency (2x clock mode), as selected at reset.
Reset
I
Master Processor Reset: This signal initializes the CPU. Mode selection is performed during the last cycle
of
Reset.
Rsvd(4:1)
I/O
Reserved: These four signal pins are reserved for testing and for future revisions of this device. Users must not
connect these pins. Note that Rsvd(0) of the R3051 is now used for the
CohReq input pin.
PIN DESCRIPTION (Continued):
ABSOLUTE MAXIMUM RATINGS
(1, 3)
Symbol
Rating
Commercial
Military
Unit
VTERM
Terminal Voltage
–0.5 to +7.0
V
with Respect
to GND
TC
Operating Case
0 to +85
–55 to +125
°C
Temperature
TBIAS
Case Temperature
–55 to +125
–65 to +135
°C
Under Bias
TSTG
Storage
–55 to +125
–65 to +155
°C
Temperature
VIN
Input Voltage
–0.5 to +7.0
V
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS
may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
2. VIN minimum = –3.0V for pulse width less than 15ns.
VIN should not exceed VCC +0.5V.
3. Not more than one output should be shorted at a time. Duration of the short
should not exceed 30 seconds.
2889 tbl 05
OUTPUT LOADING FOR AC TESTING
Signal
CLD
SysClk
50 pf
All Others
25 pf
2889 tbl 08
Symbol
Parameter
Min.
Max.
Unit
VIH
Input HIGH Voltage
3.0
—
V
VIL
Input LOW Voltage
—
0
V
VIHS
Input HIGH Voltage
3.0
—
V
VILS
Input LOW Voltage
—
0
V
2889 tbl 06
AC TEST CONDITIONS—RV3081
–
+
To Device
Under Test
CLD
–4mA
+4mA
VREF
+1.5V
2889 drw 08
AC TEST CONDITIONS—R3081
2889 tbl 06
Symbol
Parameter
Min.
Max.
Unit
VIH
Input HIGH Voltage
3.0
—
V
VIL
Input LOW Voltage
—
0
V
VIHS
Input HIGH Voltage
3.5
—
V
VILS
Input LOW Voltage
—
0
V
2889 tbl 04
RECOMMENDED OPERATING
TEMPERATURE AND SUPPLY VOLTAGE
2889 tbl 07
Grade
Temperature(Case)
GND
VCC
Military
–55
°C to +125°C
0V
5.0
±10%
Commercial
0
°C to +85°C
0V
5.0
±5%
Commercial
0
°C to +85°C
0V
3.3
±5%
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