8 Mbit SPI Serial Flash SST25LF080A SST25LF080A8Mb Serial Peripheral Interface (SPI) flash memory EOL Product Data Sheet FEATURES: • Single Voltage Read and Write Operations – 3.0-3.6V • Serial Interface Architecture – SPI Compatible: Mode 0 and Mode 3 • 33 MHz Max Clock Frequency • Superior Reliability – Endurance: 100,000 Cycles (typical) – Greater than 100 years Data Retention • Low Power Consumption: – Active Read Current: 7 mA (typical) – Standby Current: 8 µA (typical) • Flexible Erase Capability – Uniform 4 KByte sectors – Uniform 32 KByte overlay blocks • Fast Erase and Byte-Program: – Chip-Erase Time: 70 ms (typical) – Sector- or Block-Erase Time: 18 ms (typical) – Byte-Program Time: 14 µs (typical) • Auto Address Increment (AAI) Programming – Decrease total chip programming time over Byte-Program operations • End-of-Write Detection – Software Status • Hold Pin (HOLD#) – Suspends a serial sequence to the memory without deselecting the device • Write Protection (WP#) – Enables/Disables the Lock-Down function of the status register • Software Write Protection – Write protection through Block-Protection bits in status register • Temperature Range – Commercial: 0°C to +70°C – Industrial: -40°C to +85°C – Extended: -20°C to +85°C • Packages Available – 8-lead SOIC 200 mil body width • All non-Pb (lead-free) devices are RoHS compliant PRODUCT DESCRIPTION SST’s serial flash family features a four-wire, SPI-compatible interface that allows for a low pin-count package occupying less board space and ultimately lowering total system costs. SST25LF080A SPI serial flash memories are manufactured with SST’s proprietary, high performance CMOS SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches. The SST25LF080A devices significantly improve performance, while lowering power consumption. The total energy consumed is a function of the applied voltage, ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 1/06 1 current, and time of application. Since for any given voltage range, the SuperFlash technology uses less current to program and has a shorter erase time, the total energy consumed during any Erase or Program operation is less than alternative flash memory technologies. The SST25LF080A devices operate with a single 3.0-3.6V power supply. The SST25LF080A devices are offered in an 8-lead SOIC package with 200 mil body width. See Figure 1 for pin assignments. The SST logo and SuperFlash are registered Trademarks of Silicon Storage Technology, Inc. These specifications are subject to change without notice. 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet FUNCTIONAL BLOCK DIAGRAM SuperFlash Memory X - Decoder Address Buffers and Latches Y - Decoder I/O Buffers and Data Latches Control Logic Serial Interface 1248 B1.0 CE# SCK SI SO ©2006 Silicon Storage Technology, Inc. WP# HOLD# S71248-06-EOL 2 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet PIN DESCRIPTION CE# 1 SO 2 8 VDD 7 HOLD# Top View WP# 3 6 SCK VSS 4 5 SI 1248 08-soic P1.0 FIGURE 1: PIN ASSIGNMENTS FOR 8-LEAD SOIC TABLE 1: PIN DESCRIPTION Symbol Pin Name Functions SCK Serial Clock To provide the timing of the serial interface. Commands, addresses, or input data are latched on the rising edge of the clock input, while output data is shifted out on the falling edge of the clock input. SI Serial Data Input To transfer commands, addresses, or data serially into the device. Inputs are latched on the rising edge of the serial clock. SO Serial Data Output To transfer data serially out of the device. Data is shifted out on the falling edge of the serial clock. CE# Chip Enable The device is enabled by a high to low transition on CE#. CE# must remain low for the duration of any command sequence. WP# Write Protect The Write Protect (WP#) pin is used to enable/disable BPL bit in the status register. HOLD# Hold To temporarily stop serial communication with SPI flash memory without resetting the device. VDD Power Supply To provide power supply voltage: 3.0-3.6V for SST25LF080A VSS Ground T1.0 1248 ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 3 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet PRODUCT IDENTIFICATION DEVICE OPERATION The SST25LF080A is accessed through the SPI (Serial Peripheral Interface) bus compatible protocol. The SPI bus consist of four control lines; Chip Enable (CE#) is used to select the device, and data is accessed through the Serial Data Input (SI), Serial Data Output (SO), and Serial Clock (SCK). TABLE 2: PRODUCT IDENTIFICATION Manufacturer’s ID Address Data 00000H BFH 00001H 80H Device ID SST25LF080A The SST25LF080A supports both Mode 0 (0,0) and Mode 3 (1,1) of SPI bus operations. The difference between the two modes, as shown in Figure 2, is the state of the SCK signal when the bus master is in Stand-by mode and no data is being transferred. The SCK signal is low for Mode 0 and SCK signal is high for Mode 3. For both modes, the Serial Data In (SI) is sampled at the rising edge of the SCK clock signal and the Serial Data Output (SO) is driven after the falling edge of the SCK clock signal. T2.0 1248 MEMORY ORGANIZATION The SST25LF080A SuperFlash memory array is organized in 4 KByte sectors with 32 KByte overlay blocks. CE# SCK SI MODE 3 MODE 3 MODE 0 MODE 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 MSB HIGH IMPEDANCE DON'T CARE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SO MSB 1248 F02.0 FIGURE 2: SPI PROTOCOL ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 4 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Hold Operation coincide with the SCK active low state, then the device exits in Hold mode when the SCK next reaches the active low state. See Figure 3 for Hold Condition waveform. HOLD# pin is used to pause a serial sequence underway with the SPI flash memory without resetting the clocking sequence. To activate the HOLD# mode, CE# must be in active low state. The HOLD# mode begins when the SCK active low state coincides with the falling edge of the HOLD# signal. The HOLD mode ends when the HOLD# signal’s rising edge coincides with the SCK active low state. Once the device enters Hold mode, SO will be in highimpedance state while SI and SCK can be VIL or VIH. If CE# is driven active high during a Hold condition, it resets the internal logic of the device. As long as HOLD# signal is low, the memory remains in the Hold condition. To resume communication with the device, HOLD# must be driven active high, and CE# must be driven active low. See Figure 18 for Hold timing. If the falling edge of the HOLD# signal does not coincide with the SCK active low state, then the device enters Hold mode when the SCK next reaches the active low state. Similarly, if the rising edge of the HOLD# signal does not SCK HOLD# Active Hold Active Hold Active 1248 F03.0 FIGURE 3: HOLD CONDITION WAVEFORM Write Protection TABLE 3: CONDITIONS TO EXECUTE WRITE-STATUSREGISTER (WRSR) INSTRUCTION SST25LF080A provides software Write protection. The Write Protect pin (WP#) enables or disables the lock-down function of the status register. The Block-Protection bits (BP1, BP0, and BPL) in the status register provide Write protection to the memory array and the status register. See Table 5 for Block-Protection description. WP# BPL Execute WRSR Instruction L 1 Not Allowed L 0 Allowed H X Allowed T3.0 1248 Write Protect Pin (WP#) The Write Protect (WP#) pin enables the lock-down function of the BPL bit (bit 7) in the status register. When WP# is driven low, the execution of the Write-Status-Register (WRSR) instruction is determined by the value of the BPL bit (see Table 3). When WP# is high, the lock-down function of the BPL bit is disabled. ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 5 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Status Register Program operation, the status register may be read only to determine the completion of an operation in progress. Table 4 describes the function of each bit in the software status register. The software status register provides status on whether the flash memory array is available for any Read or Write operation, whether the device is Write enabled, and the state of the memory Write protection. During an internal Erase or TABLE 4: SOFTWARE STATUS REGISTER Default at Power-up Read/Write 1 = Internal Write operation is in progress 0 = No internal Write operation is in progress 0 R WEL 1 = Device is memory Write enabled 0 = Device is not memory Write enabled 0 R 2 BP0 Indicate current level of block write protection (See Table 5) 1 R/W 3 BP1 Indicate current level of block write protection (See Table 5) 1 R/W 4:5 RES Reserved for future use 0 N/A 6 AAI Auto Address Increment Programming status 1 = AAI programming mode 0 = Byte-Program mode 0 R 7 BPL 1 = BP1, BP0 are read-only bits 0 = BP1, BP0 are read/writable 0 R/W Bit Name Function 0 BUSY 1 T4.0 1248 Busy The Busy bit determines whether there is an internal Erase or Program operation in progress. A “1” for the Busy bit indicates the device is busy with an operation in progress. A “0” indicates the device is ready for the next valid operation. Write Enable Latch (WEL) The Write-Enable-Latch bit indicates the status of the internal memory Write Enable Latch. If the Write-Enable-Latch bit is set to “1”, it indicates the device is Write enabled. If the bit is set to “0” (reset), it indicates the device is not Write enabled and does not accept any memory Write (Program/ Erase) commands. The Write-Enable-Latch bit is automatically reset under the following conditions: • • • • • • • Power-up Write-Disable (WRDI) instruction completion Byte-Program instruction completion Auto Address Increment (AAI) programming reached its highest memory address Sector-Erase instruction completion Block-Erase instruction completion Chip-Erase instruction completion ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 6 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Block Protection (BP1, BP0) Block Protection Lock-Down (BPL) The Block-Protection (BP1, BP0) bits define the size of the memory area, as defined in Table 5, to be software protected against any memory Write (Program or Erase) operations. The Write-Status-Register (WRSR) instruction is used to program the BP1 and BP0 bits as long as WP# is high or the Block-Protect-Lock (BPL) bit is 0. Chip-Erase can only be executed if Block-Protection bits are both 0. After power-up, BP1 and BP0 are set to 1. WP# pin driven low (VIL), enables the Block-ProtectionLock-Down (BPL) bit. When BPL is set to 1, it prevents any further alteration of the BPL, BP1, and BP0 bits. When the WP# pin is driven high (VIH), the BPL bit has no effect and its value is “Don’t Care”. After power-up, the BPL bit is reset to 0. TABLE 5: SOFTWARE STATUS REGISTER BLOCK PROTECTION1 Status Register Bit Protected Memory Area Protection Level BP1 BP0 8 Mbit 0 0 0 None 1 (1/4 Memory Array) 0 1 0C0000H-0FFFFFH 2 (1/2 Memory Array) 1 0 080000H-0FFFFFH 3 (Full Memory Array) 1 1 000000H-0FFFFFH T5.0 1248 1. Default at power-up for BP1 and BP0 is ‘11’. Auto Address Increment (AAI) The Auto Address Increment Programming-Status bit provides status on whether the device is in AAI programming mode or Byte-Program mode. The default at power up is Byte-Program mode. ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 7 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Instructions most significant bit. CE# must be driven low before an instruction is entered and must be driven high after the last bit of the instruction has been shifted in (except for Read, Read-ID and Read-Status-Register instructions). Any low to high transition on CE#, before receiving the last bit of an instruction bus cycle, will terminate the instruction in progress and return the device to the standby mode. Instruction commands (Op Code), addresses, and data are all input from the most significant bit (MSB) first. Instructions are used to Read, Write (Erase and Program), and configure the SST25LF080A. The instruction bus cycles are 8 bits each for commands (Op Code), data, and addresses. Prior to executing any Byte-Program, Auto Address Increment (AAI) programming, Sector-Erase, Block-Erase, or Chip-Erase instructions, the Write-Enable (WREN) instruction must be executed first. The complete list of the instructions is provided in Table 6. All instructions are synchronized off a high to low transition of CE#. Inputs will be accepted on the rising edge of SCK starting with the TABLE 6: DEVICE OPERATION INSTRUCTIONS1 Cycle Type/ Operation2,3 Read Bus Cycle4 Max Freq MHz SIN SOUT SIN SOUT SIN SOUT SIN SOUT SIN SOUT 20 03H Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z X DOUT 1 2 3 4 5 6 High-Speed-Read 0BH Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z X Hi-Z Sector-Erase5,6 20H Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z - - Block-Erase5,7 52H Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z - - Chip-Erase6 60H Hi-Z - - - - - - - - Byte-Program6 02H Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z DIN Hi-Z Auto Address Increment (AAI) Single-Byte Program6,8 AFH Hi-Z A23-A16 Hi-Z A15-A8 Hi-Z A7-A0 Hi-Z DIN Hi-Z 05H Hi-Z X DOUT - Note9 - Note9 - Note9 Enable-Write-Status-Register (EWSR)10 50H Hi-Z - - - - - - - - Write-Status-Register (WRSR)10 01H Hi-Z Data Hi-Z - - -. - - - Read-Status-Register (RDSR) 33 Write-Enable (WREN) 06H Hi-Z - - - - - - - - Write-Disable (WRDI) 04H Hi-Z - - - - - - - - 90H or ABH Hi-Z 00H Hi-Z 00H Hi-Z ID Addr11 Hi-Z X DOUT12 Read-ID SIN SOUT X DOUT T6.0 1248 1. AMS = Most Significant Address AMS = A19 for SST25LF080A Address bits above the most significant bit of each density can be VIL or VIH 2. Operation: SIN = Serial In, SOUT = Serial Out 3. X = Dummy Input Cycles (VIL or VIH); - = Non-Applicable Cycles (Cycles are not necessary) 4. One bus cycle is eight clock periods. 5. Sector addresses: use AMS-A12, remaining addresses can be VIL or VIH 6. Prior to any Byte-Program, AAI-Program, Sector-Erase, Block-Erase, or Chip-Erase operation, the Write-Enable (WREN) instruction must be executed. 7. Block addresses for: use AMS-A15, remaining addresses can be VIL or VIH 8. To continue programming to the next sequential address location, enter the 8-bit command, AFH, followed by the data to be programmed. 9. The Read-Status-Register is continuous with ongoing clock cycles until terminated by a low to high transition on CE#. 10. The Enable-Write-Status-Register (EWSR) instruction and the Write-Status-Register (WRSR) instruction must work in conjunction of each other. The WRSR instruction must be executed immediately (very next bus cycle) after the EWSR instruction to make both instructions effective. 11. Manufacturer’s ID is read with A0=0, and Device ID is read with A0=1. All other address bits are 00H. The Manufacturer and Device ID output stream is continuous until terminated by a low to high transition on CE# 12. Device ID = 80H for SST25LF080A ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 8 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Read (20 MHz) space, i.e. for 8 Mbit density, once the data from address location 0FFFFFH had been read, the next output will be from address location 000000H. The Read instruction supports up to 20 MHz, it outputs the data starting from the specified address location. The data output stream is continuous through all addresses until terminated by a low to high transition on CE#. The internal address pointer will automatically increment until the highest memory address is reached. Once the highest memory address is reached, the address pointer will automatically increment to the beginning (wrap-around) of the address The Read instruction is initiated by executing an 8-bit command, 03H, followed by address bits [A23-A0]. CE# must remain active low for the duration of the Read cycle. See Figure 4 for the Read sequence. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 15 16 23 24 31 32 39 40 47 48 55 56 63 64 70 MODE 0 ADD. 03 SI MSB SO ADD. ADD. MSB N DOUT HIGH IMPEDANCE N+1 DOUT N+2 DOUT N+3 DOUT N+4 DOUT MSB 1248 F04.0 FIGURE 4: READ SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 9 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet High-Speed-Read (33 MHz) to high transition on CE#. The internal address pointer will automatically increment until the highest memory address is reached. Once the highest memory address is reached, the address pointer will automatically increment to the beginning (wrap-around) of the address space, i.e. for 8 Mbit density, once the data from address location 0FFFFFH has been read, the next output will be from address location 000000H. The High-Speed-Read instruction supporting up to 33 MHz is initiated by executing an 8-bit command, 0BH, followed by address bits [A23-A0] and a dummy byte. CE# must remain active low for the duration of the High-Speed-Read cycle. See Figure 5 for the High-Speed-Read sequence. Following a dummy byte (8 clocks input dummy cycle), the High-Speed-Read instruction outputs the data starting from the specified address location. The data output stream is continuous through all addresses until terminated by a low CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 15 16 23 24 31 32 39 40 47 48 55 56 63 64 71 72 80 MODE 0 0B SI MSB ADD. MSB ADD. ADD. N DOUT HIGH IMPEDANCE SO X MSB Note: X = Dummy Byte: 8 Clocks Input Dummy Cycle (VIL or VIH) N+1 DOUT N+2 DOUT N+3 DOUT N+4 DOUT 1248 F05.0 FIGURE 5: HIGH-SPEED-READ SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 10 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Byte-Program Program instruction is initiated by executing an 8-bit command, 02H, followed by address bits [A23-A0]. Following the address, the data is input in order from MSB (bit 7) to LSB (bit 0). CE# must be driven high before the instruction is executed. The user may poll the Busy bit in the software status register or wait TBP for the completion of the internal self-timed Byte-Program operation. See Figure 6 for the Byte-Program sequence. The Byte-Program instruction programs the bits in the selected byte to the desired data. The selected byte must be in the erased state (FFH) when initiating a Program operation. A Byte-Program instruction applied to a protected memory area will be ignored. Prior to any Write operation, the Write-Enable (WREN) instruction must be executed. CE# must remain active low for the duration of the Byte-Program instruction. The Byte- CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 15 16 23 24 31 32 39 MODE 0 02 SI MSB SO ADD. ADD. MSB ADD. DIN MSB LSB HIGH IMPEDANCE 1248 F06.0 FIGURE 6: BYTE-PROGRAM SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 11 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Auto Address Increment (AAI) Program status register or wait TBP for the completion of each internal self-timed Byte-Program cycle. Once the device completes programming byte, the next sequential address may be program, enter the 8-bit command, AFH, followed by the data to be programmed. When the last desired byte had been programmed, execute the Write-Disable (WRDI) instruction, 04H, to terminate AAI. After execution of the WRDI command, the user must poll the Status register to ensure the device completes programming. See Figure 7 for AAI programming sequence. The AAI program instruction allows multiple bytes of data to be programmed without re-issuing the next sequential address location. This feature decreases total programming time when the entire memory array is to be programmed. An AAI program instruction pointing to a protected memory area will be ignored. The selected address range must be in the erased state (FFH) when initiating an AAI program instruction. Prior to any write operation, the Write-Enable (WREN) instruction must be executed. The AAI program instruction is initiated by executing an 8-bit command, AFH, followed by address bits [A23-A0]. Following the addresses, the data is input sequentially from MSB (Bit 7) to LSB (Bit 0). CE# must be driven high before the AAI program instruction is executed. The user must poll the BUSY bit in the software There is no wrap mode during AAI programming; once the highest unprotected memory address is reached, the device will exit AAI operation and reset the Write-EnableLatch bit (WEL = 0). TBP TBP CE# MODE 3 SCK SI 0 1 2 3 4 5 6 7 8 15 16 23 24 31 32 33 34 35 36 37 38 39 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 MODE 0 AF A[23:16] A[15:8] Data Byte 1 A[7:0] Data Byte 2 AF TBP CE# 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 SCK SI AF Last Data Byte 04 Write Disable (WRDI) Instruction to terminate AAI Operation 05 Read Status Register (RDSR) Instruction to verify end of AAI Operation DOUT SO 1248 F07.0 FIGURE 7: AUTO ADDRESS INCREMENT (AAI) PROGRAM SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 12 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Sector-Erase The Sector-Erase instruction clears all bits in the selected 4 KByte sector to FFH. A Sector-Erase instruction applied to a protected memory area will be ignored. Prior to any Write operation, the Write-Enable (WREN) instruction must be executed. CE# must remain active low for the duration of the any command sequence. The Sector-Erase instruction is initiated by executing an 8-bit command, 20H, followed by address bits [A23-A0]. Address bits [AMS-A12] (AMS = Most Significant address) are used to determine the sector address (SAX), remaining address bits can be VIL or VIH. CE# must be driven high before the instruction is executed. The user may poll the Busy bit in the software status register or wait TSE for the completion of the internal selftimed Sector-Erase cycle. See Figure 8 for the SectorErase sequence. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 15 16 23 24 31 MODE 0 ADD. 20 SI MSB ADD. ADD. MSB HIGH IMPEDANCE SO 1248 F08.0 FIGURE 8: SECTOR-ERASE SEQUENCE Block-Erase address bits [A23-A0]. Address bits [AMS-A15] (AMS = Most significant address) are used to determine block address (BAX), remaining address bits can be VIL or VIH. CE# must be driven high before the instruction is executed. The user may poll the Busy bit in the software status register or wait TBE for the completion of the internal self-timed BlockErase cycle. See Figure 9 for the Block-Erase sequence. The Block-Erase instruction clears all bits in the selected 32 KByte block to FFH. A Block-Erase instruction applied to a protected memory area will be ignored. Prior to any Write operation, the Write-Enable (WREN) instruction must be executed. CE# must remain active low for the duration of any command sequence. The Block-Erase instruction is initiated by executing an 8-bit command, 52H, followed by CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 15 16 23 24 31 MODE 0 ADD. 52 SI MSB SO ADD. ADD. MSB HIGH IMPEDANCE 1248 F09.0 FIGURE 9: BLOCK-ERASE SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 13 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Chip-Erase by executing an 8-bit command, 60H. CE# must be driven high before the instruction is executed. The user may poll the Busy bit in the software status register or wait TCE for the completion of the internal self-timed Chip-Erase cycle. See Figure 10 for the Chip-Erase sequence. The Chip-Erase instruction clears all bits in the device to FFH. A Chip-Erase instruction will be ignored if any of the memory area is protected. Prior to any Write operation, the Write-Enable (WREN) instruction must be executed. CE# must remain active low for the duration of the Chip-Erase instruction sequence. The Chip-Erase instruction is initiated CE# MODE 3 SCK 0 1 2 3 4 5 6 7 MODE 0 60 SI MSB HIGH IMPEDANCE SO 1248 F10.0 FIGURE 10: CHIP-ERASE SEQUENCE Read-Status-Register (RDSR) CE# must be driven low before the RDSR instruction is entered and remain low until the status data is read. ReadStatus-Register is continuous with ongoing clock cycles until it is terminated by a low to high transition of the CE#. See Figure 11 for the RDSR instruction sequence. The Read-Status-Register (RDSR) instruction allows reading of the status register. The status register may be read at any time even during a Write (Program/Erase) operation. When a Write operation is in progress, the Busy bit may be checked before sending any new commands to assure that the new commands are properly received by the device. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 MODE 0 SI 05 MSB HIGH IMPEDANCE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SO MSB Status Register Out 1248 F11.0 FIGURE 11: READ-STATUS-REGISTER (RDSR) SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 14 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Write-Enable (WREN) The Write-Enable (WREN) instruction sets the WriteEnable-Latch bit to 1 allowing Write operations to occur. The WREN instruction must be executed prior to any Write (Program/Erase) operation. CE# must be driven high before the WREN instruction is executed. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 MODE 0 06 SI MSB HIGH IMPEDANCE SO 1248 F12.0 FIGURE 12: WRITE ENABLE (WREN) SEQUENCE Write-Disable (WRDI) The Write-Disable (WRDI) instruction resets the WriteEnable-Latch bit and AAI bit to 0 disabling any new Write operations from occurring. CE# must be driven high before the WRDI instruction is executed. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 MODE 0 04 SI MSB SO HIGH IMPEDANCE 1248 F13.0 FIGURE 13: WRITE DISABLE (WRDI) SEQUENCE Enable-Write-Status-Register (EWSR) Status-Register (WRSR) instruction. CE# must be driven low before the EWSR instruction is entered and must be driven high before the EWSR instruction is executed. The Enable-Write-Status-Register (EWSR) instruction arms the Write-Status-Register (WRSR) instruction and opens the status register for alteration. The Enable-WriteStatus-Register instruction does not have any effect and will be wasted, if it is not followed immediately by the Write©2006 Silicon Storage Technology, Inc. S71248-06-EOL 15 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet When WP# is high, the lock-down function of the BPL bit is disabled and the BPL, BP0, and BP1 bits in the status register can all be changed. As long as BPL bit is set to 0 or WP# pin is driven high (VIH) prior to the low-to-high transition of the CE# pin at the end of the WRSR instruction, the BP0, BP1, and BPL bit in the status register can all be altered by the WRSR instruction. In this case, a single WRSR instruction can set the BPL bit to “1” to lock down the status register as well as altering the BP0 and BP1 bit at the same time. See Table 3 for a summary description of WP# and BPL functions. CE# must be driven low before the command sequence of the WRSR instruction is entered and driven high before the WRSR instruction is executed. See Figure 14 for EWSR and WRSR instruction sequences. Write-Status-Register (WRSR) The Write-Status-Register instruction works in conjunction with the Enable-Write-Status-Register (EWSR) instruction to write new values to the BP1, BP0, and BPL bits of the status register. The Write-Status-Register instruction must be executed immediately after the execution of the EnableWrite-Status-Register instruction (very next instruction bus cycle). This two-step instruction sequence of the EWSR instruction followed by the WRSR instruction works like SDP (software data protection) command structure which prevents any accidental alteration of the status register values. The Write-Status-Register instruction will be ignored when WP# is low and BPL bit is set to “1”. When the WP# is low, the BPL bit can only be set from “0” to “1” to lockdown the status register, but cannot be reset from “1” to “0”. CE# MODE 3 SCK 0 1 2 3 4 5 6 7 MODE 0 MODE 3 MODE 0 50 SI 01 MSB SO 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 MSB STATUS REGISTER IN 7 6 5 4 3 2 1 0 MSB HIGH IMPEDANCE 1248 F14.0 FIGURE 14: ENABLE-WRITE-STATUS-REGISTER (EWSR) AND WRITE-STATUS-REGISTER (WRSR) SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 16 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet Read-ID address 00000H and the device ID is located in address 00001H. Once the device is in Read-ID mode, the manufacturer’s and device ID output data toggles between address 00000H and 00001H until terminated by a low to high transition on CE#. The Read-ID instruction identifies the devices as SST25LF080A and manufacturer as SST. The device information can be read from executing an 8-bit command, 90H or ABH, followed by address bits [A23-A0]. Following the Read-ID instruction, the manufacturer’s ID is located in CE# MODE 3 SCK 0 1 2 3 4 5 6 7 8 23 24 15 16 31 32 39 40 47 48 55 56 63 MODE 0 90 or AB SI 00 MSB 00 ADD1 MSB HIGH IMPEDANCE SO BF Device ID BF Device ID HIGH IMPEDANCE MSB Note: The manufacturer's and device ID output stream is continuous until terminated by a low to high transition on CE#. Device ID = 80H for SST25LF080A 1. 00H will output the manfacturer's ID first and 01H will output device ID first before toggling between the two. 1248 F15.0 FIGURE 15: READ-ID SEQUENCE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 17 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet ELECTRICAL SPECIFICATIONS Absolute Maximum Stress Ratings (Applied conditions greater than those listed under “Absolute Maximum Stress Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these conditions or conditions greater than those defined in the operational sections of this data sheet is not implied. Exposure to absolute maximum stress rating conditions may affect device reliability.) Temperature Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C D. C. Voltage on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD+0.5V Transient Voltage (<20 ns) on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2.0V to VDD+2.0V Package Power Dissipation Capability (Ta = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W Surface Mount Solder Reflow Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C for 10 seconds Output Short Circuit Current1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA 1. Output shorted for no more than one second. No more than one output shorted at a time. OPERATING RANGE Range AC CONDITIONS OF TEST Input Rise/Fall Time . . . . . . . . . . . . . . . 5 ns Ambient Temp VDD 0°C to +70°C 3.0-3.6V Output Load . . . . . . . . . . . . . . . . . . . . . CL = 30 pF Industrial -40°C to +85°C 3.0-3.6V See Figures 20 and 21 Extended -20°C to +85°C 3.0-3.6V Commercial TABLE 7: DC OPERATING CHARACTERISTICS Limits Symbol Parameter IDDR Read Current Min Max Units 12 mA Test Conditions IDDR1 Read Current 15 mA CE#=0.1 VDD/0.9 VDD@33 MHz, SO=open IDDW Program and Erase Current 30 mA CE#=VDD ISB Standby Current 15 µA CE#=VDD, VIN=VDD or VSS ILI Input Leakage Current 1 µA VIN=GND to VDD, VDD=VDD Max ILO Output Leakage Current VIL Input Low Voltage VIH Input High Voltage VOL Output Low Voltage VOH Output High Voltage CE#=0.1 VDD/0.9 VDD@20 MHz, SO=open 1 µA VOUT=GND to VDD, VDD=VDD Max 0.8 V VDD=VDD Min V VDD=VDD Max 0.2 V IOL=100 µA, VDD=VDD Min V IOH=-100 µA, VDD=VDD Min 0.7 VDD VDD-0.2 T7.1 1248 TABLE 8: RECOMMENDED SYSTEM POWER-UP TIMINGS Symbol Parameter Minimum Units TPU-READ1 VDD Min to Read Operation 10 µs VDD Min to Write Operation 10 µs TPU-WRITE 1 T8.0 1248 1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter. ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 18 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet TABLE 9: CAPACITANCE (Ta = 25°C, f=1 Mhz, other pins open) Parameter Description COUT1 Output Pin Capacitance CIN 1 Test Condition Maximum VOUT = 0V 12 pF VIN = 0V 6 pF Input Capacitance T9.0 1248 1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter. TABLE 10: RELIABILITY CHARACTERISTICS Symbol Parameter Minimum Specification Units Test Method NEND1 Endurance 10,000 Cycles JEDEC Standard A117 100 Years JEDEC Standard A103 100 + IDD mA TDR 1 Data Retention ILTH1 Latch Up JEDEC Standard 78 T10.0 1248 1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter. TABLE 11: AC OPERATING CHARACTERISTICS Limits 20 MHz Symbol Parameter Min 33 MHz Max Min 20 Max Units 33 MHz FCLK Serial Clock Frequency TSCKH Serial Clock High Time TSCKL Serial Clock Low Time 20 13 ns TCES1 CE# Active Setup Time 20 12 ns TCEH1 CE# Active Hold Time 20 12 ns TCHS1 CE# Not Active Setup Time 10 10 ns TCHH1 CE# Not Active Hold Time 10 10 ns TCPH CE# High Time 100 100 ns TCHZ CE# High to High-Z Output TCLZ SCK Low to Low-Z Output 0 0 ns TDS Data In Setup Time 5 3 ns TDH Data In Hold Time 5 3 ns THLS HOLD# Low Setup Time 10 10 ns THHS HOLD# High Setup Time 10 10 ns THLH HOLD# Low Hold Time 15 10 ns THHH HOLD# High Hold Time 10 10 ns THZ HOLD# Low to High-Z Output 20 14 ns TLZ HOLD# High to Low-Z Output 20 14 ns TOH Output Hold from SCK Change TV Output Valid from SCK TSE Sector-Erase 25 25 ms TBE Block-Erase 25 25 ms TSCE Chip-Erase 100 100 ms TBP Byte-Program 20 20 20 13 20 0 ns 14 0 20 ns ns 12 ns µs T11.0 1248 1. Relative to SCK. ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 19 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet TCPH CE# TCHH TCEH TSCKF TCES TCHS SCK TDS SI SO TDH TSCKR MSB LSB HIGH-Z HIGH-Z 1248 F16.0 FIGURE 16: SERIAL INPUT TIMING DIAGRAM CE# TSCKH TSCKL SCK TOH TCHZ TCLZ SO MSB LSB TV SI 1248 F17.0 FIGURE 17: SERIAL OUTPUT TIMING DIAGRAM ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 20 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet CE# THHH THHS THLS SCK THLH THZ TLZ SO SI HOLD# 1248 F18.0 FIGURE 18: HOLD TIMING DIAGRAM VDD VDD Max Chip selection is not allowed. Commands may not be accepted or properly interpreted by the device. VDD Min TPU-READ TPU-WRITE Device fully accessible Time 1248 F19.1 FIGURE 19: POWER-UP TIMING DIAGRAM ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 21 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet VIHT VHT INPUT VHT REFERENCE POINTS OUTPUT VLT VLT VILT 1248 F20.0 AC test inputs are driven at VIHT (0.9VDD) for a logic “1” and VILT (0.1VDD) for a logic “0”. Measurement reference points for inputs and outputs are VHT (0.7VDD) and VLT (0.3VDD). Input rise and fall times (10% ↔ 90%) are <5 ns. Note: VHT - VHIGH Test VLT - VLOW Test VIHT - VINPUT HIGH Test VILT - VINPUT LOW Test FIGURE 20: AC INPUT/OUTPUT REFERENCE WAVEFORMS TO TESTER TO DUT CL 1248 F21.0 FIGURE 21: A TEST LOAD EXAMPLE ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 22 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet PRODUCT ORDERING INFORMATION SST 25 XX LF 080 A XX XXXX X - 33 - XXX - 4C - XX - S2A E XXX X Environmental Attribute E1 = non-Pb Package Modifier A = 8 leads or contacts Package Type S2 = SOIC 200 mil body width Temperature Range C = Commercial = 0°C to +70°C I = Industrial = -40°C to +85°C E = Extended = -20°C to +85°C Minimum Endurance 4 = 10,000 cycles Operating Frequency 33 = 33 MHz Device Density 080 = 8 Mbit Voltage L = 3.0-3.6V Product Series 25 = Serial Peripheral Interface flash memory 1. Environmental suffix “E” denotes non-Pb solder. SST non-Pb solder devices are “RoHS Compliant”. Valid combinations for SST25LF080A SST25LF080A-33-4C-S2AE SST25LF080A-33-4I-S2AE SST25LF080A-33-4E-S2AE Note: Valid combinations are those products in mass production or will be in mass production. Consult your SST sales representative to confirm availability of valid combinations and to determine availability of new combinations. ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 23 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet PACKAGING DIAGRAMS Pin #1 Identifier TOP VIEW SIDE VIEW 0.50 0.35 5.40 5.15 1.27 BSC 0.25 0.05 5.40 5.15 8.10 7.70 END VIEW 2.16 1.75 0˚ 0.25 0.19 Note: 1. All linear dimensions are in millimeters (max/min). 2. Coplanarity: 0.1 mm 3. Maximum allowable mold flash is 0.15 mm at the package ends and 0.25 mm between leads. 8˚ 08-soic-EIAJ-S2A-3 0.80 0.50 1mm 8-LEAD SMALL OUTLINE INTEGRATED CIRCUIT (SOIC) 200 MIL BODY WIDTH (5.2MM X 8MM) SST PACKAGE CODE: S2A ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 24 1/06 8 Mbit SPI Serial Flash SST25LF080A EOL Product Data Sheet TABLE 12: REVISION HISTORY Number Description Date 00 • Initial release of data sheet Oct 2003 01 • 2004 Data Book Dec 2003 02 • Changes to Table 7 on page 18 – Added IDDR1 – Changed IDDR to from 10 mA to 12 mA • Clarified comments in Figure 19 on page 21 • Updated the S2A mechanical outline Mar 2004 03 • Added Commercial and Extended temperatures and associated MPNs May 2004 04 • • Revised Absolute Max. Stress Ratings for Surface Mount Solder Reflow Temp. Migrated document from Advance Information to Data Sheet Nov 2005 05 • • Added footnote to Product Ordering Information Removed leaded part numbers Jan 2006 06 • • End-of-Life data sheet for all devices in S71248 Recommended replacement devices are SST25VF080B found in S71296. Jan 2006 ©2006 Silicon Storage Technology, Inc. S71248-06-EOL 25 1/06