IS80C286-20 Intersil, IS80C286-20 Datasheet - Page 48

• Manufacturer Part Number: IS80C286-20
• Description: IC CPU 16BIT 5V 20MHZ 68-PLCC
• Manufacturer: Intersil

Specifications of IS80C286-20

• Processor Type: 80C286 16-Bit
• Speed: 20MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Waveforms
NOTES:
45. PCLK indicates which processor cycle phase will occur on the
46. These inputs are asynchronous. The setup and hold times
BUS CYCLE TYPE
FIGURE 35. 80C286 ASYNCHRONOUS INPUT SIGNAL TIMING
next CLK, PCLK may not indicate the correct phase until the first
cycle is performed.
shown assure recognition for testing purposes.
(SEE NOTE 47)
(SEE NOTE 45)
(SEE NOTE 46)
ERROR, BUSY
HOLD, PEREQ
INTR, NMI
PCLK
CLK
4
(Continued)
V
V
CH
CL
19
φ1
4
5
T
X
19
φ2
5
80C286
48
NOTE:
47. When RESET meets the setup time shown, the next CLK will
RESET
RESET
FIGURE 36. 80C286 RESET INPUT TIMING AND SUBSEQUENT
CLK
CLK
start or repeat φ1 of a processor cycle.
V
V
CH
V
CH
V
CL
CL
φ2
PROCESSOR CYCLE PHASE
7
φ1
φ1
6
T
(SEE NOTE 47)
X
7
T
φ2
φ2
X
6
(SEE NOTE 47)
φ1
φ1