87C5180C51BH80C31BH

EPROM PROGRAMMING EPROM AND ROM VERIFICATION

CHARACTERISTICS

Symbol

Parameter

Min

Max

Units

Programming Supply Voltage

125

130

V

Programming Supply Current

75

mA

1TCLCL

Oscillator Frequency

4

6

MHz

TAVGL

Address Setup to PROG Low

48TCLCL

TGHAX

Address Hold After PROG

48TCLCL

TDVGL

Data Setup to PROG Low

48TCLCL

TGHDX

Data Hold After PROG

48TCLCL

TEHSH

48TCLCL

TSHGL

10

m

s

TGHSL

10

m

s

TGLGH

PROG Width

90

110

m

s

TAVQV

Address to Data Valid

48TCLCL

TELQV

ENABLE Low to Data Valid

48TCLCL

TEHQZ

Data Float After ENABLE

0

48TCLCL

TGHGL

PROG High to PROG Low

10

m

s

EPROM PROGRAMMING EPROM AND ROM VERIFICATION WAVEFORMS

272335 – 23

For programming conditions see Figure 10

5 pulses for the EPROM array 25 pulses for the encryption table and lock bits

20