TM124FBK32F, TM124FBK32U 1048576 BY 32-BIT DYNAMIC RAM MODULE

TM248GBK32F, TM248GBK32U 2097152 BY 32-BIT DYNAMIC RAM MODULE

SMMS660 – MARCH 1996

5

POST OFFICE BOX 1443

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (continued)

PARAMETER

TEST CONDITIONS †

’248GBK32F - 60

’248GBK32F - 70

’248GBK32F - 80

UNIT

PARAMETER

TEST CONDITIONS †

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

VOH

High-level output

voltage

IOH = – 5 mA

2.4

2.4

2.4

V

VOL

Low-level output

voltage

IOL = 4.2 mA

0.4

0.4

0.4

V

II

Input current

(leakage)

VCC = 5.5 V,

VI = 0 V to 6.5 V,

All other pins = 0 V to VCC

± 10

± 10

± 10

µA

IO

Output current

(leakage)

VCC = 5.5 V,

VO = 0 V to VCC, CAS high

± 20

± 20

± 20

µA

ICC1

Read- or write-cycle

current (see Note 3)

VCC = 5.5 V,

Minimum cycle

384

364

344

mA

ICC2 Standby current

VIH = 2.4 V (TTL),

After one memory cycle,

RAS and CAS high

8

8

8

mA

ICC2 Standby current

VIH = VCC – 0.2 V (CMOS),

After one memory cycle,

RAS and CAS high

4

4

4

mA

ICC3

Average refresh

current (RAS only or

CBR)

(see Notes 3 and 5)

VCC = 5.5 V,

Minimum cycle,

RAS cycling,

CAS high (RAS only);

RAS low after CAS low (CBR)

760

720

680

mA

ICC4

Average EDO current

(see Note 4)

VCC = 5.5 V,

tPC = MIN,

RAS low,

CAS cycling

204

184

164

mA

† For test conditions shown as MIN / MAX, use the appropriate value specified under recommended operating conditions.

NOTES:

3. Measured with a maximum of one address change while RAS = VIL

4. Measured with a maximum of one address change while CAS = VIH

5. Measured with both sides in CBR cycle

capacitance over recommended ranges of supply voltage and operating free-air temperature,

f = 1 MHz (see Note 6)

PARAMETER

’124FBK32F

’248GBK32F

UNIT

PARAMETER

MIN

MAX

MIN

MAX

UNIT

Ci(A)

Input capacitance, A0 – A9

12

22

pF

Ci(R)

Input capacitance, RAS inputs

8

8

pF

Ci(C)

Input capacitance, CAS inputs

8

15

pF

Ci(W)

Input capacitance, W

16

30

pF

Co(DQ) Output capacitance on DQ0 – DQ31

8

15

pF

NOTE 6: VCC = 5 V ± 0.5 V, and the bias on pins under test is 0 V.