SGS Thomson Microelectronics M29F102BB70N1T, M29F102BB70K1, M29F102BB55N1T, M29F102BB50N1T, M29F102BB50K1 Datasheet

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1/21July 2000

M29F102BB

1 Mbit (64Kb x16, Boot Block) Single Supply Flash Memory

■ SINGLE 5V±10% SUPPL Y VOLTAGE for

PROGRAM, ERAS E and READ O PER AT IONS

■ ACCESS TIME: 35ns

■ PROGRAMMING TIME

– 8µs per Word typical

■ 5 MEMORY BLOCKS

– 1 Boot Block (Bottom Location) – 2 Parameter and 2 Main Blocks

■ PROGRAM/ERA SE CON T ROL LER

– Embedded Word Program algorithm – Embedded Multi-Block/Chip Erase algorithm – Status Register Polling and Toggle Bits

■ ERASE SUSPEND and RESUME MODES

– Read and Program another Block during

Erase Suspend

■ UNLOCK BYPASS PROGRAM COMMAND

– Faster Production/Batch Programming

■ TEMPORARY BLOCK UNPROTECTION

MODE

■ LOW POWER CONSUMPTION

– Standby and Automatic Standby

■ 100,000 PROGRAM/ER ASE CYCL ES per

BLOCK

■ M28F102 COMPATIBLE

– Pin-out and Read Mode

■ 20 YEARS DATA RETENTI ON

– Defectivity below 1 ppm/year

■ ELECTRONIC SIGNATURE

– Manufacturer Code: 0020h – Bottom Device Code M29F102BB: 0097h

TSOP40 (N)

10 x 14mm

PLCC44 (K)

Figure 1. Logic Diagram

AI02130C

A0-A15

DQ0-DQ15

M29F102BB

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Figure 2. PLCC Connections

AI02131C

A14

A11

DQ6 DQ5 DQ4

DQ3

DQ2

DQ12

DQ8 V

DQ11 DQ10

A15

DQ15

A12

DQ13

M29F102BB

DQ14

A13

DQ1

DQ9 A10

A8DQ7

DQ0

Figure 3. TSOP Connections

DQ6

DQ3

DQ2

DQ13

DQ8

DQ7

DQ10

DQ9

A14

A11

A10

A15

DQ1

DQ0

DQ14

DQ15

AI02132C

M29F102BB

20 21

A13

A12

A6 A5

DQ11

DQ12

DQ5

DQ4

Table 1. Signal Names

A0-A15 Address Inputs DQ0-DQ15 Data Inputs/Outputs E

Chip Enable

Output Enable

Write Enable

Reset/Block Temporary Unprotect

Supply Voltage

Ground

NC Not Connected Internally

SUMMARY DESCRIPTION

The M29F102BB is a 1 Mbit (64Kb x16) non-volatile memory that can be read, erased and reprogrammed. These operations can be performed using a single 5V supply. On power-up the memory defaults to its Read m ode where it can be read in the same way as a ROM or EPROM.

The memory is divided into blocks that can be erased independently so it is pos sible to pres erve valid data while old data is erased. Each block can be protected independently to prev ent accidental Program or Erase commands from modifying the memory. Program and Erase com m ands are wri tten to the Command Interface of t he memory. An on-chip Program/Erase Controller simplifies the process of programming or erasing the memory by taking care of all of the special operations that are required to update the memory contents. The end of a program or erase op eration can be de tected and any error conditions identified. The command set required to control the memory is consistent with JEDEC standards.

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M29F102BB

The blocks in the memory are as ymmetrically arranged, see Table 3, Block Addresses. The first 32 Kwords have been divided into four additional blocks. The 8 Kword Boot Block can be used for small initialization code to start the microprocessor, the two 4 Kword Parameter Blocks can be used for parameter storage and th e remaining 16 Kwords are a small Main Block where the application may be stored.

Chip Enable, Output Enable and Write Enable signals control the bus operation of the memory. They allow simple conne ction to most m icroprocessors, often without additional logic.

The memory is offered in PLCC44 and TSOP40 (10 x 14mm) packages and it is suppl ied with all

the bits erased (set to ’1’).

Table 2. Absolute Maximum Ratings

(1)

Note: 1. Except for the ratin g "Operating Temperat ure Range", stresse s above th ose listed in the Tabl e " A bsolute M aximum Rat i ngs" may

cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indi cated in t he Operating secti ons of thi s specif i cation is not imp l i ed. Exposure to Ab solute Maxi m um Rati ng condi tions for extended per iods may aff ect device reliabilit y. Refer also to the STMicroel ectronics SURE Program an d other relevan t qual ity docum en ts .

2. Mini m um Voltage may undershoot to –2V duri ng transiti on and for less t han 20ns during transit io ns.

Symbol Parameter Value Unit

Ambient Operating Temperature 0 to 70 °C

BIAS

Temperature Under Bias –50 to 125 °C

STG

Storage Temperature –65 to 150 °C

(2)

Input or Output Voltage –0.6 to 6 V

Supply Voltage –0.6 to 6 V

Identification Voltage –0.6 to 13.5 V

Table 3. Bottom Boot Block Addresses, M29F102BB

Size

(KWords)

Address Range

4 32 8000h-FFFFh 3 16 4000h-7FFFh 2 4 3000h-3FFFh 1 4 2000h-2FFFh 0 8 0000h-1FFFh

M29F102BB

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SIGNAL DESCRIPTIONS

See Figure 1, Logic Diagram, and Table 1, Sign al Names, for a brief overview of the signals connected to this device.

Address Inputs (A0-A15). The Address Inputs select the cells i n the memory array to a ccess during Bus Read operations. During Bus Write operations they control the commands sent to the Command Interface of the internal state machine.

Data Inputs/Outputs (DQ0-DQ15). The Data Inputs/Outputs output the data stored at the selected address during a Bus Read operation. During Bus Write operations DQ0-DQ7 represent the commands sent to the Command Interface of the internal state machine; the Command Interface does not use DQ8-DQ15 to decode the commands.

Chip Enable (E

). The Chip Enable, E, activates

the memory, allowing Bus Read and Bus Write operations to be performed. When Chip Enable is High, V

, all other pins are ignored.

Output Enable (G

). The Output Enable, G, con-

trols the Bus Read operation of the memory.

Write Enable (W

). The Write Enable, W, controls

the Bus Write operation of the memory’s Command Interf a c e .

Reset/Block Temporary Unprotect (RP

). The Re-

set/Block Temporary Unprotect pin can be used to apply a Hardware Reset to the memory or to temporarily unprotect all blocks that have been protected.

A Hardware Reset is achieved by holding Reset/ Block Temporary Unprotect Low, V

, for at least

PLPX

. After Reset/Block Temporary Unprotect

goes High, V

, the memory will be ready for Bus

Read and Bus Write operations after t

PHEL

or t

PLYH

, whichever occurs last. See Table 13 and Figure 11, Reset/Temporary Unprotect AC Characteristics for more details.

Holding RP

at VID will temporarily unprotect the protected blocks in the memory. Program and Erase operations on all blocks will be possible. The transition from V

to VID must be slower than

PHPHH

Reset/Block Temporary Unprotect can be left unconnected. A weak internal pull-up resistor ensures that the memory always operates correctly.

Supply Voltage. The VCC Supply Voltage

supplies the power for all operations (Read, Program, Erase etc.).

The Command Interface is disabled when the V

Supply Voltage is less than the L ockout Voltage, V

LKO

. This prevents Bus Write operations from accidentally damaging the data during power up, power down and power surges. If the Program/ Erase Controller is programming or erasing during this time then the operation aborts and the memory contents being altered will be invalid.

A 0.1µF capacitor should be connected between the V

Supply Voltage pin and the VSS Ground pin to decouple the current surges from the power supply. The PCB track widths must be sufficient to carry the currents required during program and erase operations, I

CC3

Vss Ground. The V

Ground is the reference

for all voltage measurements.

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M29F102BB

Table 4. Bus Operations

Note: X = VIL or VIH.

Operation E G W Address Inputs

Data

Inputs/Outputs

Bus Read

Cell Address Data Output

Bus Write

Command Address Data Input

Output Disable X

XHi-Z

Standby

XXX Hi-Z

Read Manufacturer Code

A0 = VIL, A1 = VIL, A9 = VID, Others V

or V

0020h

Read Device Code

A0 = VIH, A1 = VIL, A9 = VID, Others V

or V

0097h

BUS OPERATIONS

There are five standard bus operations that control the device. These are Bus Read, Bus Wri te, Output Disable, Standby and Automatic Standby. See Table 4, Bus Operations, for a summary. Typically glitches of less than 5ns on Chip Enabl e o r Write Enable are ignored by t he mem ory and do not a ffect bus operations.

Bus Read. Bus Read operations read from the memory cells, or specific registers in the Command Interface. A valid Bus Read operation involves setting the desired address on the Address Inputs, applying a Low sig nal, V

, to Chip Enable and Output Enable and keeping Write Enable High, V

. The Data Inputs/Outputs will output the value, see Figure 8, Rea d Mode AC Wav eforms, and Table 11, Read AC Characteristics, for details of when the output becomes valid.

Bus Write. Bus Write operations write to the Command Interface. A valid Bus Write operation begins by setting the desire d address on t he Address Inputs. The Address Inputs are latched by the Command Interface on the falling edge of Chip Enable or Write Enable, whichever occurs last. The Data Inputs/Outputs a re latched by the Command Interface on the rising edge of Chip Enable or Write Enable, whichever occurs first. Output Enable must remain High, V

, during the whole Bus Write operation. See Figures 9 and 10, Write AC Waveforms, and Tables 12 and 13, Write AC Characteristics, for details of the timing requirements.

Output Disa bl e . The Data Inputs/Outputs are in the high impedance s tate when Output Enable is High, V

Standby. When Chip Enable is High, V

, the memory enters Standby mode and the Data Inputs/Outputs pins are placed in the high-imped-

ance state. To reduce the S upply Current to the Standby Supply Current, I

CC2

, Chip Enable should

be held within V

± 0.2V. For the Standby current

level see Table 10, DC Characteristics. During program or erase operations the memory

will continue to use the Program/Erase Supply Current, I

CC3

, for Program or Erase operations un-

til the operation completes. Automatic Standby. If CMOS levels (V

± 0.2V) are used to drive the bus and the bus is inactive for 150ns or more the memory enters Automatic Standby where the internal Supply Current is reduced to the Standby Supply Current, I

CC2

. The Data Inputs/Outputs will still output data if a Bus Read operation is in progress.

Special Bus Operations

Additional bus operations can be performed to read the Electronic Signature and also to apply and remove Block Protec tion. These bus operations are intended for use by programming equipment and are not usually used in applications. They require V

to be applied to some pins.

Electronic Signature. The memory has two codes, the manufacturer code and the device code, that can be read to identify the memory. These codes can be read by applying t he signals listed in Table 4, Bus Operations.

Block Protection and Blocks Unprotection. Each block can be separately protected against accidental Program or Erase. Protected blocks can be unprotected to allow data to be changed.

There are two methods available for protecting and unprotecting the blocks, one for use on programming equipment and the other for in-system use. For further information refer to Application Note AN1122, Applying P rotection and Unp rotection to M29 Series Flash.

M29F102BB

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COMMAND INTERFACE

All Bus Write operations t o the me mory are in terpreted by the Command Interface. Commands consist of one or more sequential Bus Write operations. Failure to observe a valid sequence of Bus Write operations will result in the memory returning to Read mode. The long command sequences are imposed to maximize data security.

The commands are summarized in Table 5, Commands. Refer to Table 5 in conjunction with the text descriptions below.

Read/Reset Command. The Read/Reset command returns the memory to its Read mode where it behaves like a ROM or EPROM. It also resets the errors in the Status Register. Either one or three Bus Write operations can be u sed to issue the Read/Reset command.

If the Read/Reset command is issued during a Block Erase operation or following a Programming or Erase error then the memory will take upto 10

µs

to abort. During the abort period no valid data can be read from the mem ory. Issuing a Read/Reset command during a Block Erase operation will leave invalid data in the memory.

Auto Select Command. The Auto Select command is used to read the Manufacturer Code, the Device Code and the Block Protection Status. Three consecutive Bus Write operations are required to issue the Auto Select command. Once the Auto Select comma nd is issued the memory remains in Auto Select mode unt il another command is issued.

From the Auto Select mode the Manufacturer Code can be read using a Bus Read operation with A0 = V

and A1 = VIL. The other address bits

may be set to either V

or VIH. The Manufa cturer

Code for STMicroelectronics is 0020h. The Device Code can be read using a B us Read

operation with A0 = V

and A1 = VIL. The other

address bits may be set to e ither V

or VIH. The

Device Code for the M29F102BB is 0097h. The Block Protecti on St at us of e ac h bl ock can be

read using a Bus Rea d operation with A0 = V

A1 = V

, and A12-A15 specifying the add ress of the block. The other address bits may be set to either V

or VIH. If the addressed block is protected then 01h is output on Data Inputs/Outputs DQ0-DQ7, otherwise 00h is output.

Program Command. The Program command can be used to program a value to one address in the memory array at a time. The command requires four Bus Write operations, the final write operation latches the address and data in the internal

state machine and starts the Program/Erase Controller.

If the address falls in a pro tected block then the Program command is ignored, the data remains unchanged. The Status Register is never read and no error condition is given.

During the program operat ion the memo ry will ignore all commands. I t is n ot poss ible t o iss ue any command to abort or pause the operation. Typical program times are given in Table 6. Bus Read operations during the program o peration will output the Status Register on the Data Inputs/Outputs. See the section on the S tatus Register for more details.

After the program operation has completed the memory will return to the Read mode, unle ss an error has occurred. When an error occurs the memory will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read mode.

Note that the Program command cannot change a

bit set at ’0’ bac k to ’1’. One of the E rase Commands must be used to set all the bits in a block or in the whole memory from ’0’ to ’1’.

Unlock Bypass Command. The Unlock Bypass command is used in conjunction with the Unlock Bypass Program command to program the memory. When the access time to the device is long (as with some EPROM programmers) considerable time saving can be made by using these commands. Three Bus Write operations are requ ired to issue the Unlock Bypass command.

Once the Unlock Bypas s command has bee n issued the memory will only accept the Unloc k Bypass Program command and the Unlock Bypass Reset command. The memory can be read as if in Read mode.

Unlock Bypass Program Command. The Unlock Bypass Prog ram comma nd can be used to program one address in memory at a time. The command requires two B us Write operations, the final write operation latches the address and data in the internal stat e machine and starts th e Program/Erase Controller.

The Program operation using the Unlock Bypass Program command behaves identically to the Program operation using the Program command. A protected block cannot be programmed; the operation cannot be aborted and the Status Register is read. Errors must be reset using the Read/Re set command, which l eaves the d evice in Unlo ck Bypass Mode. See the Program command for details on the behavior.

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M29F102BB

Table 5. Commands

Note: X Don’t Care, PA Program Address, PD Program Data, BA Any address in the Block. All values in the table are in hexadecimal. The Com m and Interface only uses addr ess bits A0-A10 a nd DQ0-DQ7 to ver i f y the commands, the upper address bi ts and the upper data

bits are Do n’ t Care.

Read/Re set. After a Read/Reset command, read the memory as normal until another command is issued. Auto Select. After an Auto Select com m and, read Manufacturer ID, Device ID or Block Protection Status. Program, Unlock Bypass Program, Ch ip Erase, Bl o ck E r ase. After these command s read t he St atus R egister until t he Pro gram/Er ase

Controller complet es and the mem o ry returns to Re ad Mode. Add additional B l ocks during B l ock Erase Comm and with addi ti onal Bus Write Operation s until the Timeout Bit is set .

Unlock Bypass. After the Unlock Bypass command issue Unlock Bypass Program or Unlock Bypass Reset commands. Unlock Bypass Reset. After the Unlock Bypass Reset command read the memory as normal until another command is issued. Erase Suspend. After the Erase Suspend command read non-erasing memory blocks as normal, issue Auto Select and Program commands

on non-era sing blocks as normal. Erase Resume. After the E ras e Res ume c omman d the s uspe nde d Er ase o pe ration re sum es, read th e Stat u s Reg ister u ntil the Prog ram/

Erase Cont roller compl etes and th e m emory returns to Read Mo de.

Command

Length

Bus Write Operations

1st 2nd 3rd 4th 5th 6th

Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data

Read/Reset

1X F0

3 555 AA 2AA 55 X F0 Auto Select 3 555 AA 2AA 55 555 90 Program 4 555 AA 2AA 55 555 A0 PA PD Unlock Bypass 3 555 AA 2AA 55 555 20 Unlock Bypass

Program

2X A0PAPD

Unlock Bypass Reset 2 X 90 X 00 Chip Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 555 10 Block Erase 6+ 555 AA 2AA 55 555 80 555 AA 2AA 55 BA 30 Erase Suspend 1 X B0 Erase Resume 1 X 30

Unlock Bypass Reset Command. The Unlock Bypass Reset command can be used to return t o Read/Reset mode from Unlock Bypass Mode. Two Bus Write operations are required to issue the Unlock Bypass Reset command.

Chip Erase Command. The Chip Erase command can be used to erase the entire chip. Six Bus Write operations are required to issue the Chip Erase Command and start the Program/Erase Controller.

If any blocks are protected then these are ignored and all the other blocks are erased. If all of the blocks are protect e d th e Chip Erase op erat i on ap-

pears to start but will terminate within about 100µs, leaving the data unchanged. No error condition is given when protected blocks are ignored.

During the erase operation the memory will ignore all commands. It is not possible to issue any command to abort the operation. Typical chip erase times are given in Table 6. All Bus Read operations during the Chip E rase operation will output the Status Register on the Data Inputs/Outputs. See the section on the S tatus Register for more details.

After the Chip Erase operation has completed t he memory will return to the Read Mode, unle ss an error has occurred. When an error occurs the memory will continue to output the Status Register. A Read/Reset command must be issued to reset the error condition and return to Read Mode.

The Chip Erase Command sets all of the bits in unprotected blocks of the memory to ’1’. All previous data is lost.

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