Intel UPI-C42, UPI-L42 specifications AC Characteristics, DBB Read, DBB Write

Page 17

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

NOTE:

All AC Characteristics apply to both the UPI-C42 and UPI-L42

DBB READ

Symbol

Parameter

Min

Max

Units

 

 

 

 

 

 

tAR

CS, A0 Setup to RDv

0

 

ns

tRA

CS, A0 Hold After RDu

0

 

ns

tRR

RD Pulse Width

160

 

ns

tAD

CS, A0 to Data Out Delay

 

130

ns

tRD

RDv to Data Out Delay

0

130

ns

tDF

RDu to Data Float Delay

 

85

ns

DBB WRITE

 

 

 

 

 

 

 

 

 

 

 

Symbol

Parameter

 

Min

Max

Units

 

 

 

 

 

 

tAW

CS, A0 Setup to WRv

 

0

 

ns

tWA

CS, A0 Hold After WRu

 

0

 

ns

tWW

WR Pulse Width

 

160

 

ns

tDW

Data Setup to WRu

 

130

 

ns

tWD

Data Hold After WRu

 

0

 

ns

17

Image 17
Contents DIP Pin ConfigurationPin Description UPI-C42/UPI-L42Block Diagram UPI-C42/L42 Product Selection Guide UPI-C42 Low power Chmos version of the UPI-42Intel 82C42 UPI-L42 The low voltage 3.3V version of the UPI-C42IBF OBF UPI-42 Compatible FeaturesBits of Status Interrupt Routines Program Memory Bank SwitchUPI-C42 Features Suspend Suspend Mode SummaryNew Instructions NEW UPI-C42 InstructionsRDÝ, WRÝ XTAL1, XTAL2Xtal Programming and Verifying the UPI-C42BUS ProgVerify Quick-Pulse Programming AlgorithmSecurity BIT Security BIT PROGRAMMING/ VerificationVerification Signature ModeSync Mode Access Code Applications Sync Mode Timing DiagramsUPI-C42 80-Column Matrix Printer Interface UPI-C42-8243 Keyboard ScannerRESET, SS XTAL2, ResetAbsolute Maximum Ratings UPI-C42 UPI-L42DC Characteristics DBB Write AC CharacteristicsDBB Read Clock AC Characteristics DMAAC Characteristics Port AC Testing INPUT/OUTPUT Waveform AC Testing Load Circuit AC CHARACTERISTICS-PROGRAMMING UPI-C42 and UPI-L42Driving from AN External Source LC Oscillator Mode Crystal Oscillator ModeRead OPERATION-DATA BUS Buffer Register WaveformsWrite OPERATION-DATA BUS Buffer Register Clock TimingWaveforms Combination PROGRAM/VERIFY ModeVerify Mode Port Port Timing During External Access EADMA Accumulator UPI Instruction SetJmpp @A Revision Summary