TMS27C128 131 072-BIT UV ERASABLE PROGRAMMABLE READ-ONLY MEMORY

TMS27PC128 131 072-BIT PROGRAMMABLE READ-ONLY MEMORY

SMLS128E–OCTOBER 1984–REVISED JANUARY 1993

POST OFFICE BOX 1443

77251–1443

8

recommended operating conditions

MIN

NOM

MAX

UNIT

VCC Supply voltage

Read mode (see Note 2)

4.5

5

5.5

V

VCC Supply voltage

SNAP! Pulse programming algorithm

6.25

6.5

6.75

V

VPP Supply voltage

Read mode

VCC – 0.6

VCC + 0.6

V

VPP Supply voltage

SNAP! Pulse programming algorithm

12.75

13

13.25

V

VIH

High level dc input voltage

TTL

2

VCC +1

V

VIH

High-level dc input voltage

CMOS

VCC – 0.2

VCC +1

V

VIL

Low level dc input voltage

TTL

– 0.5

0.8

V

VIL

Low-level dc input voltage

CMOS

– 0.5

0.2

V

TA

Operating free-air temperature

’27C128-_ _JL,JL4

’27PC128_ _NL,NL4

FML, FML4

0

70

°C

TA

Operating free-air temperature

’27C128-_ _JE,JE4

’27PC128_ _NE,NE4

FME, FME4

–40

70

°C

NOTES:

2. VCC must be applied before or at the same time as VPP and removed after or at the same time as VPP. The device must not be inserted

into or removed from the board when VPP or VCC is applied.

electrical characteristics over full ranges of operating conditions

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH

High level dc output voltage

IOH = – 2.5 mA

3.5

V

VOH

High-level dc output voltage

IOH = – 20 µA

VCC – 0.1

V

VOL

Low level dc output voltage

IOL = 2.1 mA

0.4

V

VOL

Low-level dc output voltage

IOL = 20 µA

0.1

V

II

Input current (leakage)

VI = 0 to 5.5 V

±1

µA

IO

Output current (leakage)

VO = 0 to VCC

±1

µA

IPP1

VPP supply current

VPP = VCC = 5.5 V

1

10

µA

IPP2

VPP supply current (during program pulse)

VPP = 13 V

35

50

mA

ICC1

VCC supply current (standby)

TTL-input level

VCC = 5.5 V, E = VIH

250

500

µA

ICC1

VCC supply current (standby)

CMOS-input level

VCC = 5.5 V, E = VCC

100

250

µA

VCC = 5.5 V, E = VIL,

ICC2

VCC supply current (active)

tcycle = minimum cycle time,

15

30

mA

outputs open

† Typical values are at TA = 25°C and nominal voltages.

capacitance

over

recommended

ranges

of

supply

voltage

and

operating

free-air

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Ci

Input capacitance

VI = 0, f = 1 MHz

6

10

pF

CO

Output capacitance

VO = 0, f = 1 MHz

10

14

pF

† Typical values are at TA = 25°C and nominal voltages.

Capacitance measurements are made on sample basis only.