A80960CA25 Intel, A80960CA25 Datasheet - Page 32

• Manufacturer Part Number: A80960CA25
• Description: IC MPU I960CA 25MHZ 168-PGA
• Manufacturer: Intel

Specifications of A80960CA25

• Processor Type: i960
• Features: CA suffix, 32-Bit with DMA, 1K Cache
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 168-PGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 802884

80960CA-33, -25, -16
(80960CA-16 only, under conditions described in Section 4.2, Operating Conditions and Section 4.5.1, AC Test Conditions.)
28
Relative Output Timings (1,2,3,8)
T
T
T
T
T
T
T
T
T
T
Relative Input Timings (1,2,3)
T
T
T
T
T
T
T
T
NOTES:
1. See Section 4.5.2, AC Timing Waveforms for waveforms and definitions.
2. See Figure 16 for capacitive derating information for output delays and hold times.
3. See Figure 17 for capacitive derating information for rise and fall times.
4. Where N is the number of N
5. N = Number of wait states inserted with READY.
6. Output Data and/or DT/R may be driven indefinitely following a cycle if there is no subsequent bus activity.
7. Since asynchronous inputs are synchronized internally by the 80960CA, they have no required setup or hold times to be recognized and for
8. These specifications are guaranteed by the processor.
9. These specifications must be met by the system for proper operation of the processor.
10. This timing is dependent upon the loading of PCLK2:1. Use the derating curves of Section 4.5.3, Derating Curves to adjust the timing for
11. In the 1-x input clock mode, the maximum input clock period is limited to 125 ns while the processor is operating. When the processor is in
12. When in the 1-x input clock mode, these specifications assume a stable input clock with a period variation of less than ± 0.1% between adja-
13. In 2-x clock mode, RESET is an asynchronous input which has no required setup and hold time for proper operation. However, to guarantee
14. In 1-x clock mode, RESET is an asynchronous input which has no required setup and hold time for proper operation. However, to guarantee
15. The interrupt pins are synchronized internally by the 80960CA. They have no required setup or hold times for proper operation. These pins are
Symbol
AVSH1
AVSH2
AVEL1
AVEL2
NLQV
DVNH
NLNH
NHQX
EHTV
TVEL
IS5
IH5
IS6
IH6
IS7
IH7
IS8
IH8
active when there are no wait states in an access.
proper operation. However, to guarantee recognition of the input at a particular edge of PCLK2:1, the setup times shown must be met. Asyn-
chronous inputs must be active for at least two consecutive PCLK2:1 rising edges to be seen by the processor.
PCLK2:1 loading.
reset, the input clock may stop even in 1-x mode.
cent cycles.
the device exits reset synchronized to a particular clock edge, the RESET pin must meet setup and hold times to the falling edge of the CLKIN.
(See Figure 22.)
the device exits reset synchronized to a particular clock edge, the RESET pin must meet setup and hold times to the rising edge of the CLKIN.
(See Figure 23.)
sampled by the interrupt controller every other clock and must be active for at least three consecutive PCLK2:1 rising edges when asserting
them asynchronously. To guarantee recognition at a particular clock edge, the setup and hold times shown must be met for two consecutive
PCLK2:1 rising edges.
A31:2 Valid to ADS Rising
BE3:0, W/R, SUP, D/C,
DMA, DACK3:0 Valid to ADS Rising
A31:2 Valid to DEN Falling
BE3:0, W/R, SUP, INST,
DMA, DACK3:0 Valid to DEN Falling
WAIT Falling to Output Data Valid
Output Data Valid to WAIT Rising
WAIT Falling to WAIT Rising
Output Data Hold after WAIT Rising
DT/R Hold after DEN High
DT/R Valid to DEN Falling
RESET Input Setup (2-x Clock Mode)
RESET Input Hold (2-x Clock Mode)
DREQ3:0 Input Setup
DREQ3:0 Input Hold
XINT7:0, NMI Input Setup
XINT7:0, NMI Input Hold
RESET Input Setup (1-x Clock Mode)
RESET Input Hold (1-x Clock Mode)
Table 18. 80960CA AC Characteristics (16 MHz) (Continued)
RAD
, N
RDD
, N
Parameter
WAD
or N
WDD
wait states that are programmed in the Bus Controller Region Table. WAIT never goes
(N+1)*T–8
N*T – 4
T/2 – 7
T/2 – 4
T/4 + 1
T – 4
T – 6
T – 6
T – 6
Min
10
16
11
9
9
5
3
N*T ± 4
± 4
(N+1)*T+6
N*T + 4
T + 4
T + 6
T + 6
T + 6
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(4)
(4)
(5)
(6)
(13)
(13)
(7)
(7)
(15)
(15)
(14)
(14)
Notes