Intel UPI-L42, UPI-C42 specifications AC Characteristics DMA, AC Characteristics Port, Clock

Page 18

UPI-C42/UPI-L42

AC CHARACTERISTICS

TA e 0§C to a70§C, VSS e 0V, VCC e VDD e a5V g10%; a3.3V g10% for the UPI-L42 (Continued)

CLOCK

Symbol

Parameter

Min

Max

Units

 

 

 

 

 

tCY UPI-C42/UPI-L42

Cycle Time

1.2

9.20

ms(1)

tCYC UPI-C42/UPI-L42

Clock Period

80

613

ns

tPWH

Clock High Time

30

 

ns

tPWL

Clock Low Time

30

 

ns

tR

Clock Rise Time

 

10

ns

tF

Clock Fall Time

 

10

ns

NOTE:

1. tCY e 15/f(XTAL)

AC CHARACTERISTICS DMA

Symbol

Parameter

Min

Max

Units

 

 

 

 

 

tACC

DACK to WR or RD

0

 

ns

tCAC

RD or WR to DACK

0

 

ns

tACD

DACK to Data Valid

0

130

ns

tCRQ

RD or WR to DRQ Cleared

 

110

ns(1)

NOTE:

1. CL e 150 pF.

AC CHARACTERISTICS PORT 2

Symbol

Parameter

f(tCY)(3)

Min

Max

Units

tCP

Port Control Setup Before Falling Edge of PROG

1/15 tCYb28

55

 

ns(1)

tPC

Port Control Hold After Falling Edge of PROG

1/10 tCY

125

 

ns(2)

tPR

PROG to Time P2 Input Must Be Valid

8/15 tCYb16

 

650

ns(1)

tPF

Input Data Hold Time

 

0

150

ns(2)

tDP

Output Data Setup Time

2/10 tCY

250

 

ns(1)

tPD

Output Data Hold Time

1/10 tCYb80

45

 

ns(2)

tPP

PROG Pulse Width

6/10 tCY

750

 

ns

NOTES:

1.CL e 80 pF.

2.CL e 20 pF.

3.tCY e 1.25 ms.

18

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Contents Configuration DIP PinUPI-C42/UPI-L42 Pin DescriptionBlock Diagram Intel 82C42 UPI-C42 Low power Chmos version of the UPI-42UPI-C42/L42 Product Selection Guide UPI-L42 The low voltage 3.3V version of the UPI-C42UPI-42 Compatible Features Bits of StatusIBF OBF Program Memory Bank Switch UPI-C42 FeaturesInterrupt Routines Suspend Mode Summary SuspendRDÝ, WRÝ NEW UPI-C42 InstructionsNew Instructions XTAL1, XTAL2BUS Programming and Verifying the UPI-C42Xtal ProgSecurity BIT Quick-Pulse Programming AlgorithmVerify Security BIT PROGRAMMING/ VerificationSignature Mode Sync ModeVerification Access Code Sync Mode Timing Diagrams ApplicationsUPI-C42-8243 Keyboard Scanner UPI-C42 80-Column Matrix Printer InterfaceAbsolute Maximum Ratings XTAL2, ResetRESET, SS UPI-C42 UPI-L42DC Characteristics AC Characteristics DBB ReadDBB Write AC Characteristics DMA AC Characteristics PortClock AC CHARACTERISTICS-PROGRAMMING UPI-C42 and UPI-L42 AC Testing INPUT/OUTPUT Waveform AC Testing Load CircuitLC Oscillator Mode Crystal Oscillator Mode Driving from AN External SourceWrite OPERATION-DATA BUS Buffer Register WaveformsRead OPERATION-DATA BUS Buffer Register Clock TimingCombination PROGRAM/VERIFY Mode Verify ModeWaveforms Port Timing During External Access EA DMAPort UPI Instruction Set AccumulatorRevision Summary Jmpp @A