M68AR256MN70ZB1T datasheet, PDF

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M68AR256MN70ZB1T: Description256KX16 STANDARD SRAM, 70ns, PBGA48, 6 X 7 MM, 0.75 MM PITCH, TFBGA-48; Categorystorage storage; File Size414KB，21 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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M68AR256MN70ZB1T Overview

256KX16 STANDARD SRAM, 70ns, PBGA48, 6 X 7 MM, 0.75 MM PITCH, TFBGA-48

M68AR256MN70ZB1T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	BGA
package instruction	6 X 7 MM, 0.75 MM PITCH, TFBGA-48
Contacts	48
Reach Compliance Code	not_compliant
ECCN code	3A991.B.2.A
Maximum access time	70 ns
I/O type	COMMON
JESD-30 code	R-PBGA-B48
JESD-609 code	e0
length	7 mm
memory density	4194304 bit
Memory IC Type	STANDARD SRAM
memory width	16
Number of functions	1
Number of terminals	48
word count	262144 words
character code	256000
Operating mode	ASYNCHRONOUS
Maximum operating temperature	70 °C
Minimum operating temperature
organize	256KX16
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	TFBGA
Encapsulate equivalent code	BGA48,6X8,30
Package shape	RECTANGULAR
Package form	GRID ARRAY, THIN PROFILE, FINE PITCH
Parallel/Serial	PARALLEL
power supply	1.8 V
Certification status	Not Qualified
Maximum seat height	1.2 mm
Maximum standby current	0.000003 A
Minimum standby current	1 V
Maximum slew rate	0.006 mA
Maximum supply voltage (Vsup)	1.95 V
Minimum supply voltage (Vsup)	1.65 V
Nominal supply voltage (Vsup)	1.8 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn63Pb37)
Terminal form	BALL
Terminal pitch	0.75 mm
Terminal location	BOTTOM
width	6 mm
Base Number Matches	1

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M68AR256M

4 Mbit (256K x16) 1.8V Asynchronous SRAM

FEATURES SUMMARY

■

SUPPLY VOLTAGE: 1.65 to 1.95V

256K x 16 bits SRAM with OUTPUT ENABLE

EQUAL CYCLE and ACCESS TIME: 55ns,

70ns

SINGLE BYTE READ/WRITE

LOW STANDBY CURRENT

LOW V

DATA RETENTION: 1.0V

TRI-STATE COMMON I/O

AUTOMATIC POWER DOWN

TFBGA48 PACKAGE

– Compliant with Lead-Free Soldering Pro-

cesses

– Standard or Lead-Free Option

Figure 1. Packages

FBGA

TFBGA48 (ZB)

6x7mm

)

September 2004

1/21

M68AR256M

TABLE OF CONTENTS

FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 1. Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SUMMARY DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2.

Table 1.

Figure 3.

Figure 4.

Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

TFBGA Connections (Top view through package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Output Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Read Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Write Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Standby/Power-Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 3. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

DC and AC PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 4. Operating and AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 5. AC Measurement I/O Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 6. AC Measurement Load Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 5. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 6. DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 7. Address Controlled, Read Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 8. Chip Enable or Output Enable Controlled, Read Mode AC Waveforms . . . . . . . . . . . . . 12

Figure 9. Chip Enable or UB/LB Controlled, Standby Mode AC Waveforms . . . . . . . . . . . . . . . . . 12

Table 7. Read and Standby Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 10.Write Enable Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 11.Chip Enable Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 12.UB/LB Controlled, Write AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 8. Write Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 13.Low VCC Data Retention AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 9. Low V

Data Retention Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

)

PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 14.TFBGA48 6x7mm - 6x8 active ball array, 0.75mm pitch, Bottom View Package Outline 18

Table 10. TFBGA48 6x7mm - 6x8 active ball array, 0.75mm pitch, Package Mechanical Data . . . 18

PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 11. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2/21

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