LH28F400SU-NC FEATURES • User-Configurable x8 or x16 Operation • 5 V Write/Erase Operation (5 V VPP) – No Requirement for DC/DC Converter to Write/Erase • 60 ns Maximum Access Time (VCC = 5.0 V ± 0.25 V) • 80ns Maximum Access Time (VCC = 5.0 V ± 0.5 V) • 32 Independently Lockable Blocks (16K) • 100,000 Erase Cycles per Block • Automated Byte Write/Block Erase – Command User Interface – Status Register – RY /» BY » Status Output • System Performance Enhancement – Erase Suspend for Read – Two-Byte Write – Full Chip Erase • Data Protection – Hardware Erase/Write Lockout during Power Transitions – Software Erase/Write Lockout • Independently Lockable for Write/Erase on Each Block (Lock Block and Protect Set/Reset) • 5 µA (Typ.) ICC in CMOS Standby • 0.2 µA (Typ.) Deep Power-Down • State-of-the-Art 0.45 µm ETOX™ Flash 4M (512K × 8, 256K × 16) Flash Memory 56-PIN TSOP TOP VIEW NC 1 56 NC 2 55 A16 A15 3 54 BYTE A14 4 53 GND A13 5 52 DQ15/A-1 NC A12 6 51 DQ7 A11 7 50 DQ14 A10 8 49 DQ6 A9 9 48 DQ13 A8 10 47 DQ5 NC 11 46 DQ12 NC 12 45 DQ4 WE 13 44 VCC RP 14 43 VCC NC 15 42 DQ11 NC 16 41 DQ3 VPP 17 40 DQ10 RY/BY 18 39 DQ2 NC 19 38 DQ9 A17 20 37 DQ1 A7 21 36 DQ8 A6 22 35 DQ0 A5 23 34 OE A4 24 33 GND A3 25 32 CE A2 26 31 A0 A1 27 30 NC NC 28 29 NC 28F400SUT-NC60-1 Figure 1. 56-Pin TSOP Configuration Technology • 56-Pin, 1.2 mm × 14 mm × 20 mm TSOP (Type I) Package • 48-Pin, 1.2 mm × 12 mm × 18 mm TSOP (Type I) Package • 44-Pin, 600-mil SOP Package 1 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory 48-PIN TSOP TOP VIEW A15 1 48 A16 A14 2 47 BYTE A13 3 46 GND A12 4 45 DQ15/A-1 A11 5 44 DQ7 A10 6 43 DQ14 A9 7 42 DQ6 A8 8 41 DQ13 NC 9 40 DQ5 NC 10 39 DQ12 WE 11 38 RP 12 37 VPP 13 36 DQ11 NC 14 35 DQ3 RY/BY 15 34 DQ10 NC 16 33 DQ2 A17 17 32 DQ9 A7 18 31 DQ1 A6 19 30 DQ8 A5 20 29 DQ0 A4 21 28 OE A3 22 27 GND A2 23 26 CE A1 24 25 A0 TOP VIEW VPP 1 44 RP RP/BY 2 43 WE A17 3 42 A8 A7 4 41 A9 A6 5 40 A10 A5 6 39 A11 A4 7 38 A12 A3 8 37 A13 A2 9 36 A14 A1 10 35 A15 11 34 DQ4 A0 A16 CE 12 33 BYTE VCC GND 13 32 GND OE 14 31 DQ15/A-1 DQ0 15 30 DQ7 28F400SUT-NC60-24 Figure 2. 48-Pin TSOP Configuration 2 44-PIN SOP DQ8 16 29 DQ14 DQ1 17 28 DQ6 DQ9 18 27 DQ13 DQ2 19 26 DQ5 DQ10 20 25 DQ12 DQ3 21 24 DQ4 DQ11 22 23 VCC 28F400SUT-NC60-23 Figure 3. 44-Pin SOP Configuration 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC DQ8 - DQ15 DQ0 - DQ7 OUTPUT BUFFER OUTPUT BUFFER INPUT BUFFER INPUT BUFFER DATA QUEUE REGISTERS ID REGISTER I/O LOGIC BYTE CSR OUTPUT MULTIPLEXER REGISTER ESRs CE OE CUI WE RP DATA COMPARATOR ADDRESS COUNTER 16KB BLOCK 31 ... 16KB BLOCK 30 X-DECODER 16KB BLOCK 1 ADDRESS QUEUE LATCHES Y GATING/SENSING Y-DECODER 16KB BLOCK 0 INPUT BUFFER ... A-1,0 - A17 ... RY/BY WSM PROGRAM/ ERASE VOLTAGE SWITCH VPP VCC GND 28F400SUT-NC60-2 Figure 4. LH28F400SU-NC Block Diagram 3 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory PIN DESCRIPTION SYMBOL NAME AND FUNCTION DQ15 - A-1 INPUT BYTE-SELECT ADDRESSES: Selects between high and low byte when device is in x8 mode. This address is latched in x8 Data Writes. Not used in x16 mode (i.e., the DQ15/A-1 input buffer is turned off when BYTE is high). A0 - A12 INPUT WORD-SELECT ADDRESSES: Select a word within one 16K block. These addresses are latched during Data Writes. A13 - A17 INPUT BLOCK-SELECT ADDRESSES: Select 1 of 32 Erase blocks. These addresses are latched during Data Writes, Erase and Lock-Block operations. INPUT/OUTPUT LOW-BYTE DATA BUS: Inputs data and commands during CUI write cycles. Outputs array, buffer, identifier or status data in the appropriate Read mode. Floated when the chip is de-selected or the outputs are disabled. INPUT/OUTPUT HIGH-BYTE DATA BUS: Inputs data during x16 Data Write operations. Outputs array, buffer or identifier data in the appropriate Read mode; not used for Status register reads. Floated when the chip is de-selected or the outputs are disabled. DQ15/A-1 is address. INPUT CHIP ENABLE INPUT: Activate the device’s control logic, input buffers, decoders and sense amplifiers. CE » must be low to select the device. RP » INPUT RESET/POWER-DOWN: With RP » low, the device is reset, any current operation is aborted and device is put into the deep power down mode. When the power is turned on, RP » pin is turned to low in order to return the device to default configuration. When the power transition is occurred, or the power on/off, RP» is required to stay low in order to protect data from noise. When returning from Deep Power-Down, a recovery time of 430 ns is required to allow these circuits to power up. When RP » goes low, any current or pending WSM operation(s) are terminated, and the device is reset. All Status registers return to ready (with all status flags cleared). After returning, the device is in read array mode. OE » INPUT OUTPUT ENABLE: Gates device data through the output buffers when low. The outputs float to tri-state off when OE » is high. WE INPUT WRITE ENABLE: Controls access to the CUI, Data Queue Registers and Address Queue Latches. WE is active low, and latches both address and data (command or array) on its rising edge. OPEN DRAIN OUTPUT READY/BUSY: Indicates status of the internal WSM. When low, it indicates that the WSM is busy performing an operation. When the WSM is ready for new operation or Erase is Suspended, or the device is in deep power-down mode RY/» BY » pin is floated. INPUT BYTE ENABLE: BYTE low places device in x8 mode. All data is then input or output on DQ0 - DQ7, and DQ8 - DQ15 float. Address A-1 selects between the high and low byte. BYTE high places the device in x16 mode, and turns off the A-1 input buffer. Address A0, then becomes the lowest order address. VPP SUPPLY ERASE/WRITE POWER SUPPLY (5.0 V ±0.5 V): For erasing memory array blocks or writing words/bytes into the flash array. VCC SUPPLY DEVICE POWER SUPPLY (3.3 V ±0.3 V): Do not leave any power pins floating. GND SUPPLY GROUND FOR ALL INTERNAL CIRCUITRY: Do not leave any ground pins floating. DQ0 - DQ7 DQ8 - DQ15 CE » RY »/BY » BYTE NC 4 TYPE NO CONNECT: No internal connection to die, lead may be driven or left floating. 4M (512K × 8, 256K × 16) Flash Memory INTRODUCTION Sharp’s LH28F400SU-NC 4M Flash Memory is a revolutionary architecture which enables the design of truly mobile, high performance, personal computing and communication products. With innovative capabilities, 5 V single voltage operation and very high read/write performance, the LH28F400SU-NC is also the ideal choice for designing embedded mass storage flash memory systems. The LH28F400SU-NC’s independently lockable 32 symmetrical blocked architecture (16K each) extended cycling, low power operation, very fast write and read performance and selective block locking provide a highly flexible memory component suitable for cellular phone, facsimile, game, PC, printer and handy terminal. The LH28F400SU-NC’s single power supply operation enables the design of memory cards which can be read/ written in 5.0 V systems. Its x8/x16 architecture allows the optimization of memory to processor interface. The flexible block locking option enables bundling of executable application software in a Resident Flash Array or memory card. Manufactured on Sharp’s 0.45 µm ETOX™ process technology, the LH28F400SU-NC is the most cost-effective, high-density 5.0 V flash memory. DESCRIPTION The LH28F400SU-NC is a high performance 4M (4,194,304) block erasable non-volatile random access memory organized as either 256K × 16 or 512K × 8. The LH28F400SU-NC includes thirty-two 16K (16,384) blocks. A chip memory map is shown in Figure 5. The implementation of a new architecture, with many enhanced features, will improve the device operating characteristics and results in greater product reliability and ease of use. Among the significant enhancements of the LH28F400SU-NC: • • • • • 5 V Read, Write/Erase Operation (5 V VCC, VPP) Low Power Capability Improved Write Performance Dedicated Block Write/Erase Protection Command-Controlled Memory Protection Set/Reset Capability A Command User Interface (CUI) serves as the system interface between the microprocessor or microcontroller and the internal memory operation. Internal Algorithm Automation allows Byte Writes and Block Erase operations to be executed using a TwoWrite command sequence to the CUI in the same way as the LH28F008SA 8M Flash Memory. LH28F400SU-NC A Superset of commands have been added to the basic LH28F008SA command-set to achieve higher write performance and provide additional capabilities. These new commands and features include: • • • • Software Locking of Memory Blocks Memory Protection Set/Reset Capability Two-Byte Serial Writes in 8-bit Systems Erase All Unlocked Blocks Writing of memory data is performed typically within 13 µs per byte or within 20 µs per word. A Block Erase operation erases one of the 32 blocks in typically 0.6 seconds, independent of the other blocks. LH28F400SU-NC allows to erase all unlocked blocks. It is desirable in case of which you have to implement Erase operation maximum 32 times. Only in x8 mode, LH28F400SU-NC enables Two-Byte Serial Write which is operated by three times command input. Writing of memory data is performed typically within 20 µs per two-byte. This feature can improve 8-bit system write performance by up to typically 10 µs per byte. All operations are started by a sequence of Write commands to the device. Status Register (described in detail later) and a RY »/BY » output pin provide information on the progress of the requested operation. Same as the LH28F008SA, LH28F400SU-NC requires an operation to complete before the next operation can be requested, also it allows to suspend block erase to read data from any other block, and allow to resume erase operation. The LH28F400SU-NC provides user-selectable block locking to protect code or data such as Device Drivers, PCMCIA card information, ROM-Executable OS or Application Code. Each block has an associated non-volatile lock-bit which determines the lock status of the block. In addition, the LH28F400SU-NC has a software controlled master Write Protect circuit which prevents any modifications to memory blocks whose lock-bits are set. When the device power-up or RP » turns High, Write Protect Set/Confirm command must be written. Otherwise, all lock bits in the device remain being locked, can’t perform the Write to each block and single Block Erase. Write Protect Set/Confirm command must be written to reflect the actual lock status. However, when the device power-on or RP » turns High, Erase All Unlocked Blocks can be used. If used, Erase is performed with reflecting actual lock status, and after that Write and Block Erase can be used. 5 LH28F400SU-NC The LH28F400SU-NC contains a Compatible Status Register (CSR) which is 100% compatible with the LH28F008SA Flash memory’s Status Register. This register, when used alone, provides a straightforward upgrade capability to the LH28F004SUT-NC from a LH28F008SA-based design. The LH28F400SU-NC incorporates an open drain RY »/BY » output pin. This feature allows the user to ORtie many RY /» BY » pins together in a multiple memory configuration such as a Resident Flash Array. The LH28F400SU-NC is specified for a maximum access time of 60 ns (tACC) at 5 V operation (4.75 to 5.25 V), and 70 ns (t ACC) at 5 V operation (4.5 to 5.5 V) over the commercial temperature range (0 to +70°C). The LH28F400SU-NC incorporates an Automatic Power Saving (APS) feature which substantially reduces the active current when the device is in static mode of operation (addresses not switching). In APS mode, the typical ICC Current is 2 mA at 5 V. A Deep Power-Down mode of operation is invoked when the RP » (called PWD on the LH28F008SA) pin transitions low, any current operation is aborted and the device is put into the deep power down mode. This mode brings the device power consumption to less than 5 µA and provides additional write protection by acting as a device reset pin during power transitions. When the power is turned on, RP » pin is turned to low in order to return the device to default configuration. When the power transition is occured, or at the power on/off RP » pin is required to stay low in order to protect data from noise. A recovery time of 480 ns is required from RP » switching high until outputs are again valid. In the Deep Power-Down State, the WSM is reset (any current operation will abort) and the CSR register is cleared. A CMOS Standby mode of operation is enabled when CE » transitions high and RP » stays high with all input control pins at CMOS levels. In this mode, the device draws an ICC standby current of 10 µA. 4M (512K × 8, 256K × 16) Flash Memory MEMORY MAP 7FFFFH 7C000H 7BFFFH 78000H 77FFFH 74000H 73FFFH 70000H 6FFFFH 6C000H 6BFFFH 68000H 67FFFH 64000H 63FFFH 60000H 5FFFFH 5C000H 5BFFFH 58000H 57FFFH 54000H 53FFFH 50000H 4FFFFH 4C000H 4BFFFH 48000H 47FFFH 44000H 43FFFH 40000H 3FFFFH 3C000H 3BFFFH 38000H 37FFFH 34000H 33FFFH 30000H 2FFFFH 2C000H 2BFFFH 28000H 27FFFH 24000H 23FFFH 20000H 1FFFFH 1C000H 1BFFFH 18000H 17FFFH 14000H 13FFFH 10000H 0FFFFH 0C000H 0BFFFH 08000H 07FFFH 04000H 03FFFH 00000H 16KB BLOCK 31 16KB BLOCK 30 16KB BLOCK 29 16KB BLOCK 28 16KB BLOCK 27 16KB BLOCK 26 16KB BLOCK 25 16KB BLOCK 24 16KB BLOCK 23 16KB BLOCK 22 16KB BLOCK 21 16KB BLOCK 20 16KB BLOCK 19 16KB BLOCK 18 16KB BLOCK 17 16KB BLOCK 16 16KB BLOCK 15 16KB BLOCK 14 16KB BLOCK 13 16KB BLOCK 12 16KB BLOCK 11 16KB BLOCK 10 16KB BLOCK 9 16KB BLOCK 8 16KB BLOCK 7 16KB BLOCK 6 16KB BLOCK 5 16KB BLOCK 4 16KB BLOCK 3 16KB BLOCK 2 16KB BLOCK 1 16KB BLOCK 0 NOTE: In Byte-wide (x8) mode A1 is the lowest order address. In Word-wide (x16) mode A1 don't care, address values are ignored A1. 28F400SUT-NC60-3 Figure 5. Memory Map 6 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC BUS OPERATIONS, COMMANDS AND STATUS REGISTER DEFINITIONS Bus Operations for Word-Wide Mode (BY T » E » = VIH) RP » CE » OE » WE A0 DQ0-15 RY »/BY » NOTE Read VIH VIL VIL VIH X DOUT X 1, 2, 7 Output Disable VIH VIL VIH VIH X High-Z X 1, 6, 7 Standby VIH VIH X X X High-Z X 1, 6, 7 Deep Power-Down VIL X X X X High-Z VOH 1, 3 Manufacturer ID VIH VIL VIL VIH VIL 00B0H VOH 4 Device ID VIH VIL VIL VIH VIH ID VOH 4 Write VIH VIL VIH VIL X DIN X 1, 5, 6 MODE Bus Operations for Byte-Wide Mode (BY T » E » = VIL) RP » CE » OE » WE A0 DQ0-7 RY »/BY » NOTE Read VIH VIL VIL VIH X DOUT X 1, 2, 7 Output Disable VIH VIL VIH VIH X High-Z X 1, 6, 7 Standby VIH VIH X X X High-Z X 1, 6, 7 Deep Power-Down VIL X X X X High-Z VOH 1, 3 Manufacturer ID VIH VIL VIL VIH VIL B0H VOH 4 Device ID VIH VIL VIL VIH VIH ID VOH 4 Write VIH VIL VIH VIL X DIN X 1, 5, 6 MODE NOTES: 1. X can be VIH or VIL for address or control pins except for RY »/BY », which is either VOL or VOH . 2. RY »/BY » output is open drain. When the WSM is ready, Erase is suspended or the device is in deep power-down mode, RY »/BY » will be at VOL if it is tied to VCC through a resistor. When the RY /» BY » at VOL is independent of OE » while a WSM operation is in progress. 3. RP » at GND ± 0.2 V ensures the lowest deep power-down current. 4. A0 at VIL provide manufacturer ID codes. A0 at VIH provide device ID codes. Device ID code= 21H (x8). Device ID Code = 6621H (x16). All other addresses are set to zero. 5. Commands for different Erase operations, Data Write operations, and Lock-Block operations can only be successfully completed when VPP = VPPH. 6. While the WSM is running, RY »/BY » in Level-Mode (default) stays at VOL until all operations are complete. RY »/BY » goes to VOH when the WSM is not busy or in erase suspend mode. 7. RY »/BY » may be at VOL while the WSM is busy performing various operations. For example, a status register read during a write operation. 8. Only to RP », VIH (MIN.) = 2.4 V at TTL-level input. 7 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory LH28F008SA-Compatible Mode Command Bus Definitions FIRST BUS CYCLE SECOND BUS CYCLE COMMAND NOTE OPER. ADDRESS DATA OPER. ADDRESS DATA Read Array Write X FFH Read AA AD Intelligent Identifier Write X 90H Read IA ID 1 Read Compatible Status Register Write X 70H Read X CSRD 2 Clear Status Register Write X 50H Word Write Write X 40H Write WA WD Alternate Word Write Write X 10H Write WA WD Block Erase/Confirm Write X 20H Write BA D0H 4 Erase Suspend/Resume Write X B0H Write X D0H 4 ADDRESS AA = Array Address BA = Block Address IA = Identifier Address WA = Write Address X = Don’t Care 3 DATA AD = Array Data CSRD = CSR Data ID = Identifier Data WD = Write Data NOTES: 1. Following the intelligent identifier command, two Read operations access the manufacturer and device signature codes. 2. The CSR is automatically available after device enters Data Write, Erase or Suspend operations. 3. Clears CSR.3, CSR.4, and CSR.5. See Status register definitions. 4. While device performs Block Erase, if you issue Erase Suspend command (B0H), be sure to confirm ESS (Erase-Suspend-Status) is set to 1 on compatible status register. In the case, ESS bit was not set to 1, also completed the Erase (ESS = 0, WSMS = 1), be sure to issue Resume command (D0H) after completed next Erase command. Beside, when the Erase Suspend command is issued, while the device is not in Erase, be sure to issue Resume command (D0H) after the next erase complete. LH28F400SU-NC Performance Enhancement Command Bus Definitions COMMAND MODE FIRST BUS CYCLE SECOND BUS CYCLE OPER. ADD. DATA OPER. ADD. DATA THIRD BUS CYCLE OPER. ADD. NOTE DATA Protect Set/Confirm Write X 57H Write 0FFH D0H 1, 2 Protect Reset/Confirm Write X 47H Write 0FFH D0H 3 Lock Block/Confirm Write X 77H Write BA D0H 1, 2, 4 Erase All Unlocked Blocks Write X A7H Write X D0H 1, 2 Write X FBH Write A-1 WD (L, H) Two-Byte Write ADDRESS BA = Block Address WA = Write Address X = Don’t Care x8 Write WA WD (H, L) 1, 2, 5 DATA AD = Array Data WD (L, H) = Write Data (Low, High) WD (H, L) = Write Data (High, Low) NOTES: 1. After initial device power-up, or return from deep power-down mode, the block lock status bits default to the locked state independent of the data in the corresponding lock bits. In order to upload the lock bit status, it requires to write Protect Set/Confirm command. 2. To reflect the actual lock-bit status, the Protect Set/Confirm command must be written after Lock Block/Confirm command. 3. When Protect Reset/Confirm command is written, all blocks can be written and erased regardless of the state of the lock-bits. 4. The Lock Block/Confirm command must be written after Protect Reset/Confirm command was written. 5. A1 is automatically complemented to load second byte of data. A1 value determines which WD is supplied first: A1 = 0 looks at the WDL, A1 = 1 looks at the WDH. In word-wide (x16) mode A1, don't care. 6. Second bus cycle address of Protect Set/Confirm and Protect Reset/Confirm command is 0FFH. Specifically A9 - A8 = 0, A7 - A0 = 1, others are don’t care. 8 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC Compatible Status Register WSMS ESS ES DWS VPPS R R R 7 6 5 4 3 2 1 0 CSR.7 = WRITE STATE MACHINE STATUS (WSMS) 1 = Ready 0 = Busy CSR.6 = ERASE-SUSPEND STATUS (ESS) 1 = Erase Suspended 0 = Erase in Progress/Completed CSR.5 = ERASE STATUS (ES) 1 = Error in Block Erasure 0 = Successful Block Erase CSR.4 = DATA-WRITE STATUS (DWS) 1 = Error in Data Write 0 = Data Write Successful CSR.3 = VPP STATUS (VPPS) 1 = VPP Low Detect, Operation Abort 0 = VPP OK 4M FLASH MEMORY SOFTWARE ALGORITHMS Overview With the advanced Command User Interface, its Performance Enhancement commands and Status Registers, the software code required to perform a given operation may become more intensive but it will result in much higher write/erase performance compared with current flash memory architectures. The software flowcharts describing how a given operation proceeds are shown here. Figures 4 through 6 depict flowcharts using the 2nd generation flash device in the LH28F008SA-compatible mode. Figures 7 through 12 depict flowcharts using the 2nd generation flash device’s performance enhancement commands mode. When the device power-up or the device is reset by RP » pin, all blocks come up locked. Therefore, Word/ Byte Write, Two Byte Serial Write and Block Erase can not be performed in each block. However, at that time, Erase All Unlocked Block is performed normally, if used, and reflect actual lock status, also the unlocked block data is erased. When the device power-up or the device is reset by RP » pin, Set Write Protect command must be written to reflect actual block lock status. Reset Write Protect command must be written before Write Block Lock command. To reflect actual block lock status, Set Write Protect command is succeeded. NOTES: 1. RY »/BY » output or WSMS bit must be checked to determine completion of an operation (Erase Suspend, Erase or Data Write) before the appropriate Status bit (ESS, ES or DWS) is checked for success. 2. If DWS and ES are set to ‘1’ during an erase attempt, an improper command sequence was entered. Clear the CSR and attempt the operation again. 3. The VPPS bit, unlike an A/D converter, does not provide continuous indication of VPP level. The WSM interrogates VPP’s level only after the Data-Write or Erase command sequences have been entered, and informs the system if VPP has not been switched on. VPPS is not guaranteed to report accurate feedback between VPPL and VPPH. 4. CSR.2 - CSR.0 = Reserved for further enhancements. These bits are reserved for future use and should be masked out when polling the CSR. The Compatible Status Register (CSR) is used to determine which blocks are locked. In order to see Lock Status of a certain block, a Word/Byte Write command (WA = Block Address, WD = FHH) is written to the CUI, after issuing Set Write Protect command. If CSR.7, CSR.5 and CSR.4 (WSMS, ES and DWS) are set to '1’s, the block is locked. If CSR.7 is set to '1', the block is not locked. Reset Write Protect command enables Write/Erase operation to each block. In the case of Block Erase is performed, the block lock information is also erased. Block Lock command and Set Write Protect command must be written to prohibit Write/Erase operation to each block. There are unassigned commands. It is not recommended that the customer use any command other than the valid commands specified in “Command Bus Definitions”. Sharp reserved the right to redefine these codes for future functions. Please do not execute reprogramming 0 for the bit which has already been programmed 0. Overwrite operation may generate unerasable bit. In case of reprogramming 0 to the Byte data which has been programmed 1. • Program 0 for the bit in which you want to change data from 1 to 0. • Program 1 for the bit which has already been programmed 0. For example, changing Byte data from 10111101 to 10111100 requires 11111110 programming. 9 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory BUS OPERATION START Write WRITE 40H or 10H COMMAND Word/Byte Write D = 40H or 10H A=X Write D = WD A = WA Read Q = CSRD Toggle CE or OE to update CSRD. A=X Standby Check CSR.7 1 = WSM Ready 0 = WSM Busy WRITE DATA/ADDRESS READ COMPATIBLE STATUS REGISTER CSR.7 = COMMENTS 0 Repeat for subsequent Word/Byte Writes. CSR Full Status Check can be done after each Word/Byte Write, or after a sequence of Word/Byte Writes. Write FFH after the last operation to reset device to read array mode. See Command Bus Cycle notes for description of codes. 1 CSR FULL STATUS CHECK IF DESIRED OPERATION COMPLETE CSR FULL STATUS CHECK PROCEDURE READ CSRD (see above) CSR.4, 5 = BUS OPERATION 0 DATA WRITE SUCCESSFUL 1 CSR.3 = 1 VPP LOW DETECT COMMAND COMMENTS Standby Check CSR.4, 5 1 = Data Write Unsuccessful 0 = Data Write Successful Standby Check CSR.3 1 = VPP Low Detect 0 = VPP OK CSR.3, 4, 5 should be cleared, if set, before further attempts are initiated. 0 CLEAR CSRD RETRY/ERROR RECOVERY 28F400SUT-NC60-4 Figure 6. Word/Byte Writes with Compatible Status Register 10 4M (512K × 8, 256K × 16) Flash Memory START WRITE 20H LH28F400SU-NC BUS OPERATION COMMAND Write Block Erase D = 20H A=X Write Confirm D = D0H A = BA WRITE D0H AND BLOCK ADDRESS Read Q = CSRD Toggle CE or OE to update CSRD. A=X Standby Check CSR.7 1 = WSM Ready 0 = WSM Busy READ COMPATIBLE STATUS REGISTER SUSPEND NO ERASE LOOP CSR.7 = 0 SUSPEND YES ERASE 1 CSR FULL STATUS CHECK IF DESIRED COMMENTS Repeat for subsequent Block Erasures. CSR Full Status Check can be done after each Block Erase, or after a sequence of Block Erasures. Write FFH after the last operation to reset device to read array mode. See Command Bus Cycle notes for description of codes. OPERATION COMPLETE CSR FULL STATUS CHECK PROCEDURE READ CSRD (see above) CSR.4, 5 = BUS OPERATION 0 CSR.3 = 1 0 CLEAR CSRD RETRY/ERROR RECOVERY (NOTE) VPP LOW DETECT COMMENTS Standby Check CSR.4, 5 1 = Erase Error 0 = Erase Successful Both 1 = Command Sequence Error Standby Check CSR.3 1 = VPP Low Detect 0 = VPP OK ERASE SUCCESSFUL 1 COMMAND CSR.3, 4, 5 should be cleared, if set, before further attempts are initiated. NOTE: If CSR.3 (VPPS) is set to '1', after clearing CSR.3/4/5, 1. Issue Reset WP command. 2. Retry Single Block Erase command. 3. Set WP command is issued, if necessary. If CSR.3 (VPPS) is set to '0', after clearing CSR.3/4/5, 1. Retry Single Block Erase command. If power is off or RP is low during erase operation, 1. Clear CSR.3/4/5 and issue Reset WP command, 2. Retry Single Block Erase command. 3. Set WP command is issued, if necessary. 28F400SUT-NC60-5 Figure 7. Block Erase with Compatible Status Register 11 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory START WRITE B0H BUS OPERATION COMMAND Write Erase Suspend Q = CSRD Toggle CE or OE to update CSRD. A=X Standby Check CSR.7 1 = WSM Ready 0 = WSM Busy Standby Check CSR.6 1 = Erase Suspended 0 = Erase Completed 0 1 CSR.6 = 0 Write ERASE COMPLETED Read Array Read 1 Write D = FFH A=X Q = AD Read must be from block other than the one suspended. WRITE FFH READ ARRAY DATA D = B0H A=X Read READ COMPATIBLE STATUS REGISTER CSR.7 = COMMENTS Erase Resume D = D0H A=X See Command Bus Cycle notes for description of codes. DONE NO READING? YES WRITE D0H WRITE FFH ERASE RESUMED READ ARRAY DATA 28F400SUT-NC60-6 Figure 8. Erase Suspend to Read Array with Compatible Status Register 12 4M (512K × 8, 256K × 16) Flash Memory BUS COMMAND OPERATION START Read READ COMPATIBLE STATUS REGISTER CSR.7 = LH28F400SU-NC 0 Write Q = CSRD Toggle CE or OE to update CSRD. 1 = WSM Ready 0 = WSM Busy Reset Write Protect Read 1 CSR.7 = After Write D = 47H A = X, Write D = D0H A = 0FFH Q = CSRD Toggle CE or OE to update CSRD. 1 = WSM Ready 0 = WSM Busy RESET WP READ COMPATIBLE STATUS REGISTER COMMENTS Write Lock Block D = 77H A=X Write Confirm D = D0H A = BA 0 Q = CSRD Toggle CE or OE to update CSRD. 1 = WSM Ready 0 = WSM Busy Read 1 WRITE 77H Write WRITE D0H AND BLOCK ADDRESS After Write D = 57H A = X, Write D = D0H A = 0FFH NOTE: See CSR Full Status Check for Data-Write operation. If CSR.4, 5 is set, as it is command sequence error, should be cleared before further attempts are initiated. Write FFH after the last operation to reset device to read array mode. See Command Bus Definitions for description of codes. READ COMPATIBLE STATUS REGISTER CSR.7 = Set Write Protect 0 1 CSR.4, 5 = 1 (NOTE) 0 LOCK ANOTHER BLOCK? YES NO SET WP OPERATION COMPLETE 28F400SUT-NC60-7 Figure 9. Block Locking Scheme 13 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory START START RESET WP (NOTE 1) RESET WP (NOTE 1) ERASE BLOCK (NOTE 2) WRITE MORE DATA TO BLOCK (NOTE 4) SET WP (NOTE 3) WRITE NEW DATA TO BLOCK (NOTE 4) SET WP (NOTE 3) OPERATION COMPLETE FLOW TO ADD DATA RELOCK BLOCK (NOTE 5) OPERATION COMPLETE FLOW TO REWRITE DATA NOTES: 1. Use Reset-Write-Protect flowchart. Enable Write/Erase operation to all blocks. 2. Use Block-Erase flowchart. Erasing a block clears any previously established lockout for that block. 3. Use Set-Write-Protect flowchart. This step re-implements protection to locked blocks. 4. Use Word/Byte-Write or 2-Byte-Write flowchart sequences to write data. 5. Use Block-Lock flowchart to write lock bit if desired. Figure 10. Updating Data in a Locked Block 14 28F400SUT-NC60-8 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC (Apply to LH28F400SU, x16/x8, 48TSOP/56TSOP/44SOP) START BUS COMMAND OPERATION READ COMPATIBLE STATUS REGISTER CSR.7 = Q = CSRD Toggle CE or OE to update CSRD. 1 = WSM Ready 0 = WSM Busy Read 0 Write COMMENTS 2-Byte Write D = FBH A=X 1 Write D = WD A-1 = 0 loads low byte of Data Register. A-1 = 1 loads high byte of Data Register. Other Addresses = X Write D = WD A = WA Internally, A-1 is automatically complemented to load the alternate byte location of the Data Register. Read Q = CSRD Toggle CE or OE to update CSRD. 1 = WSM Ready 0 = WSM Busy WRITE FBH WRITE DATA/A-1 WRITE DATA/ADDRESS READ COMPATIBLE STATUS REGISTER CSR.7 = 0 1 CSR.4, 5 = 1 (NOTE) 0 ANOTHER 2-BYTE WRITE NOTE: If CSR.4, 5 is set, as it is command sequence error, should be cleared before further attempts are initiated. CSR Full Status Check can be done after each 2-Byte Write, or after a sequence of 2-Byte Writes. Write FFH after the last operation to reset device to read array mode. See Command Bus Cycle notes for description of codes. YES NO OPERATION COMPLETE 28F400SUT-NC60-9 Figure 11. Two-Byte Serial Writes with Compatible Status Registers (LH28F400SU) 15 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory START (NOTE) BUS OPERATION COMMAND Write Erase All Unlocked Blocks D = A7H A=X Write Confirm D = D0H A=X WRITE A7H WRITE D0H Read Q = CSRD Toggle CE or OE to update CSRD A=X Standby Check CSR.7 1 = WSM Ready 0 = WSM Busy READ COMPATIBLE STATUS REGISTER SUSPEND NO ERASE LOOP 0 CSR.7 = SUSPEND ERASE COMMENTS YES 1 CSR FULL STATUS CHECK IF DESIRED CSR Full Status Check can be done after Erase All Unlocked Block, or after a sequence of Erasures. Write FFH after the last operation to reset device to read array mode. See Command Bus Cycle notes for description of codes. NOTE: Where power off or RP is set low during erase operation, 1. Clear CSR.3/4/5 and issue Reset WP command, 2. Retry Erase All Unlocked Block Erase command to erase all blocks, or issue Single Block Erase to erase all of the unlocked blocks in sequence. 3. Set WP command is issued, if necessary. OPERATION COMPLETE CSR FULL STATUS CHECK PROCEDURE READ CSRD (see above) CSR.4, 5 = BUS OPERATION 0 CSR.3 = 1 0 CLEAR CSRD RETRY/ERROR RECOVERY (NOTE) VPP LOW DETECT COMMENTS Standby Check CSR.4, 5 1 = Erase Error 0 = Erase Successful Both 1 = Command Sequence Error Standby Check CSR.3 1 = VPP Low Detect 0 = VPP OK ERASE SUCCESSFUL 1 COMMAND CSR.3, 4, 5 should be cleared, if set, before further attempts are initiated. NOTE: If CSR.3 (VPPS) is set to '1', after clearing CSR.3/4/5, 1. Issue Reset WP command, 2. Retry Erase All Unlocked Block Erase command to erase all blocks, or issue Single Block Erase to erase all of the unlocked blocks in sequence. 3. Set WP command is issued, if necessary. If CSR.3 (VPPS) is set to '0', after clearing CSR.3/4/5, 1. Retry Erase All Unlocked Block Erase command. 28F400SUT-NC60-10 Figure 12. Erase All Unlocked Blocks with Compatible Status Registers 16 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC BUS COMMAND OPERATION START Read Check CSR.7 1 = WSM Ready 0 = WSM Busy READ COMPATIBLE STATUS REGISTER CSR.7 = 0 COMMENTS Write Set Write Protect D = 57H A=X Write Set Confirm D = D0H A = 0FFH (A9 - A8 = 0, A7 - A0 = 1, Others = X) 1 Read Check CSR.7 1 = WSM Ready 0 = WSM Busy Read Check CSR.4, 5 1 = Unsuccesful 0 = Successful WRITE 57H WRITE CONFIRM DATA/ADDRESS NOTE: If CSR.4, 5 is set, as it is command sequence error, should be cleared before further attempts are initiated. Upon device power-up or toggle RP, Set Write Protect command must be written to reflect the actual lock-bit status. Write FFH after the last operation to reset device to Read Array Mode. See Command Bus Cycle notes for description of codes. READ COMPATIBLE STATUS REGISTER CSR.7 = 0 1 CSR.4, 5 = 1 (NOTE) 0 OPERATION COMPLETE 28F400SUT-NC60-11 Figure 13. Set Write Protect 17 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory BUS COMMAND OPERATION START Read Check CSR.7 1 = WSM Ready 0 = WSM Busy READ COMPATIBLE STATUS REGISTER CSR.7 = 0 COMMENTS Write Reset Write Protect Write Reset Confirm D = 47H A=X D = D0H A = 0FFH (A9 - A8 = 0, A7 - A0 = 1, Others = X) 1 Read Check CSR.7 1 = WSM Ready 0 = WSM Busy Read Check CSR.4, 5 1 = Unsuccesful 0 = Successful WRITE 47H WRITE CONFIRM DATA/ADDRESS NOTE: If CSR.4, 5 is set, as it is command sequence error, should be cleared before further attempts are initiated. Reset Write Protect command enables Write/Erase operation to all blocks. Write FFH after the last operation to reset device to Read Array Mode. See Command Bus Cycle notes for description of codes. READ COMPATIBLE STATUS REGISTER CSR.7 = 0 1 CSR.4, 5 = 1 (NOTE) 0 OPERATION COMPLETE 28F400SUT-NC60-12 Figure 14. Reset Write Protect 18 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC *WARNING: Stressing the device beyond ELECTRICAL SPECIFICATIONS the “Absolute Maximum Ratings” may cause permanent damage. These are stress ratings only. Operation beyond the “Operating Conditions” is not recommended and extended exposure beyond the “Operating Conditions” may affect device reliability. Absolute Maximum Ratings* Temperature under bias ......................... 0°C to +80°C Storage temperature ......................... -65°C to +125°C VCC = 5.0 V ± 0.5 V Systems SYMBOL TA PARAMETER Operating Temperature, Commercial MIN. MAX. UNITS TEST CONDITIONS NOTE 0 70.0 °C Ambient Temperature 1 VCC VCC with Respect to GND -0.2 7.0 V 2 VPP VPP Supply Voltage with Respect to GND -0.2 7.0 V 2 V Voltage on any Pin (Except VCC, VPP) with Respect to GND -0.5 7.0 V 2 I Current into any Non-Supply Pin ±30 mA 100.0 mA IOUT Output Short Circuit Current 3 NOTES: 1. Operating temperature is for commercial product defined by this specification. 2. Minimum DC voltage is -0.5 V on input/output pins. During transitions, this level may undershoot to -2.0 V for periods < 20 ns. Maximum DC voltage on input/output pins is VCC + 0.5 V which, during transitions, may overshoot to VCC + 2.0 V for periods < 20 ns. 3. Output shorted for no more than one second. No more than one output shorted at a time. Capacitance For 5.0 V Systems SYMBOL TYP. MAX. UNITS Capacitance Looking into an Address/Control Pin 7 10 pF TA = 25°C, f = 1.0 MHz 1 Capacitance Looking into an Address/Control Pin A1 9 12 pF TA = 25°C, f = 1.0 MHz 1 COUT Capacitance Looking into an Output Pin 9 12 pF TA = 25°C, f = 1.0 MHz 1 CLOAD Load Capacitance Driven by Outputs for Timing Specifications 100 pF For VCC = 5.0 V ±0.5 V 1 Equivalent Testing Load Circuit VCC ± 10% 2.5 ns 25 Ω transmission line delay CIN PARAMETER TEST CONDITIONS NOTE NOTE: 1. Sampled, not 100% tested. 19 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory Timing Nomenclature For 5.0 V systems use the standard JEDEC cross point definitions. Each timing parameter consists of 5 characters. Some common examples are defined below: tCE tELQV time (t) from CE » (E) going low (L) to the outputs (Q) becoming valid (V) tOE tGLQV time (t) from OE » (G) going low (L) to the outputs (Q) becoming valid (V) tACC tAVQV time (t) from address (A) valid (V) to the outputs (Q) becoming valid (V) tAS tAVWH time (t) from address (A) valid (V) to WE » (W) going high (H) tDH tWHDX time (t) from WE » (W) going high (H) to when the data (D) can become undefined (X) PIN CHARACTERS PIN STATES A Address Inputs H High D Data Inputs L Low Q Data Outputs V Valid E CE » (Chip Enable) X Driven, but not necessarily valid G OE » (Output Enable) Z High Impedance W WE (Write Enable) P RP » (Deep Power-Down Pin) R RY »/BY » (Ready/Busy) V Any Voltage Level 5V VCC at 4.5 V Min. 2.4 INPUT 0.45 2.0 0.8 TEST POINTS 2.0 0.8 2.5 ns OF 25 Ω TRANSMISSION LINE OUTPUT FROM OUTPUT UNDER TEST NOTE: AC test inputs are driven at VOH (2.4 VTTL) for a Logic '1' and VOL (0.45 VTTL) for a Logic '0'. Input timing begins at VIH (2.0 VTTL) and VIL (0.8 VTTL). Output timing ends at VIH and VIL. Input rise and fall times (10% to 90%) < 10 ns. TOTAL CAPACITANCE = 100 pF 28F400SUT-NC60-15 28F400SUT-NC60-13 Figure 15. Transient Input/Output Reference Waveform (VCC = 5.0 V ±0.5 V) TEST POINT Figure 17. Transient Equivalent Testing Load Circuit (VCC = 5.0 V ±0.5 V) 2.5 ns OF 83 Ω TRANSMISSION LINE 3.0 INPUT 1.5 0.0 TEST POINTS 1.5 OUTPUT NOTE: AC test inputs are driven at 3.0 V for a Logic '1' and 0.0 V for a Logic '0'. Input timing begins, and output timing ends at 1.5 V. Input rise and fall times (10% to 90%) < 10 ns. FROM OUTPUT UNDER TEST TEST POINT TOTAL CAPACITANCE = 30 pF 28F400SUT-NC60-16 28F400SUT-NC60-14 Figure 16. Transient Input/Output Reference Waveform (VCC = 5.0 V ±.25 V) 20 Figure 18. Transient Equivalent Testing Load Circuit (VCC = 5.0 V ±.25 V) 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC DC Characteristics VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER TYP. MIN. MAX. UNITS TEST CONDITIONS NOTE IIL Input Load Current ±1 µA VCC = VCC MAX., VIN = VCC or GND 1 ILO Output Leakage Current ±10 µA VCC = VCC MAX., VIN = VCC or GND 1 10 µA VCC = VCC MAX., CE », RP » = VCC ±0.2 V BYTE = VCC ±0.2 V or GND ±0.2 V 5 ICCS ICCD ICCR1 VCC Standby Current VCC Deep Power-Down Current 1 4 mA VCC = VCC MAX., CE », RP » = VIH BYTE = VIH or VIL 0.2 5 µA RP » = GND ±0.2 V mA VCC = VCC MAX., CMOS: CE »= GND ±0.2 V BYTE = GND ±0.2 V or VCC ±0.2 V Inputs = GND ±0.2 V or VCC ±0.2 V TTL: CE »= VIL, BYTE = VIL or VIH Inputs = VIL or VIH f = 10 MHz, IOUT = 0 mA VCC Read Current 60 1, 4 1 1, 3, 4 ICCR2 VCC Read Current 16 30 mA VCC = VCC MAX., CMOS: CE »= GND ±0.2 V BYTE = VCC ±0.2 V or GND ±0.2 V Inputs = GND ±0.2 V or VCC ±0.2 V 1, 3, 4 TTL: CE »= VIL, BYTE = VIH or VIL Inputs = VIL or VIH, f = 5 MHz, IOUT = 0 mA ICCW VCC Write Current 18 35 mA Word/Byte Write in Progress 1 ICCE VCC Block Erase Current 18 25 mA Block Erase in Progress 1 ICCES VCC Erase Suspend Current 5 10 mA CE »= VIH Block Erase Suspended 1, 2 IPPS VPP Standby Current ±1 ±10 µA VPP ≤ VCC 1 IPPD VPP Deep Power-Down Current 0.2 5 µA RP » = GND ±0.2 V 1 21 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory DC Characteristics (Continued) VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER TYP. MIN. MAX. UNITS TEST CONDITIONS NOTE 200 µA VPP > VCC 1 IPPR VPP Read Current IPPW VPP Write Current 15 35 mA VPP = VPPH, Word/Byte Write in Progress 1 IPPE VPP Erase Current 20 40 mA VPP = VPPH, Block Erase in Progress 1 IPPES VPP Erase Suspend Current 65 200 µA VPP = VPPH, Block Erase Suspended 1 VIL Input Low Voltage -0.5 0.8 V VIH Input High Voltage 2.0 VCC + 0.5 V VOL Output Low Voltage 0.45 V VCC = VCC MIN. and IOL = 5.8 mA 0.85 VCC V IOH = 2.5 mA VCC = VCC MIN. VCC - 0.4 V IOH = 100 µA VCC = VCC MIN. VOH1 Output High Voltage VOH 2 VPPL VPP during Normal Operations VPPH VPP during Write/Erase Operations VLKO VCC Erase/Write Lock Voltage 5.0 0.0 5.5 V 4.5 5.5 V 1.4 5 V NOTES: 1. All currents are in RMS unless otherwise noted. Typical values at VCC = 5.0 V, VPP = 5.0 V, T = 25°C. These currents are valid for all product versions (package and speeds). 2. ICCES is specified with the device de-selected. If the device is read while in erase suspend mode, current draw is the sum of ICCES and ICCR. 3. Automatic Power Saving (APS) reduces ICCR to less than 2 mA in Static operation. 4. CMOS inputs are either VCC ± 0.2 V or GND ± 0.2 V. TTL Inputs are either VIL or VIH. 5. Only to RP », VIH (MIN.) = 2.4 V at VTTL-level input. 22 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC AC Characteristics - Read Only Operations1 VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER VCC = 5.0 V ± 0.25 V VCC = 5.0 V ± 0.5 V MIN. MAX. MIN. UNITS NOTE MAX. tAVAV Read Cycle Time 60 70 ns tAVGL Address Setup to OE » Going Low 0 0 ns tAVQV Address to Output Delay 60 70 ns tELQV CE » to Output Delay 60 70 ns tPHQV RP » High to Output Delay 400 430 ns tGLQV OE » to Output Delay 30 35 ns 2 tELQX CE » to Output in Low Z ns 3 tEHQZ CE » to Output in High Z ns 3 tGLQX OE » to Output in Low Z ns 3 tGHQZ OE » to Output in High Z ns 3 ns 3 ns 3 ns 3 tOH Output Hold from Address, CE » or OE » change, whichever occurs first tFLGZ BYTE Low to Output in High Z tFLEL tFHEL BYTE High or Low to CE » Low 0 0 25 0 30 0 25 0 30 0 40 15 45 15 3 2 NOTES: 1. See AC Input/Output Reference Waveforms for timing measurements. 2. OE » may be delayed up to t ELQV - tGLQV after the falling edge of CE » without impact on tELQV. 3. Sampled, not 100% tested. 4. Only to RP », VIH (MIN.) = 2.4 V. 23 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory VCC POWER-UP ADDRESSES (A) STANDBY DEVICE AND ADDRESS SELECTION VIH OUTPUTS ENABLED ADDRESSES STABLE VIL DATA VALID ... ... VCC STANDBY POWER-DOWN tAVAV CE (E) VIH ... VIL tEHQZ OE (G) VIH ... VIL tAVGL WE (W) tGHQZ ... VIH VIL tGLQV tELQV tOH tGLQX tELQX DATA (D/Q) VOH ... HIGH-Z VALID OUTPUT HIGH-Z ... VOL tAVQV 5.0 V VCC GND tPHQV RP (P) VIH VIL 28F400SUT-NC60-17 Figure 19. Read Timing Waveforms 24 4M (512K × 8, 256K × 16) Flash Memory ADDRESSES (A) LH28F400SU-NC ... VIH ADDRESSES STABLE VIL ... tAVAV CE (E) VIH ... VIL tEHQZ OE (G) VIH ... VIL tFLEL tGHQZ tAVGL tAVQV BYTE (F) VIH ... VIL tGLQV tELQV tOH tGLQX tELQX DATA (DQ0 - DQ7) VOH ... HIGH-Z DATA OUTPUT VOL ... DATA OUTPUT HIGH-Z tAVQV tFLQZ DATA (DQ8 - DQ15) VOH VOL HIGH-Z DATA OUTPUT HIGH-Z 28F400SUT-NC60-18 Figure 20. BY »TE » Timing Waveforms 25 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory POWER-UP AND RESET TIMINGS VCC POWER UP RP (P) 5.0 V 4.5 V VCC (5 V) 0V tPL5V ADDRESS (A) VALID tAVQV VALID 5.0 V OUTPUTS DATA (Q) tPHQV 28F400SUT-NC60-19 Figure 21. VCC Power-Up and RP » Reset Waveforms SYMBOL PARAMETER MIN. MAX. UNITS NOTE µs 1 tPL5V RP » Low to VCC at 4.5 V MIN. tAVQV Address Valid to Data Valid for VCC = 5 V ± 10% 75 ns 2 tPHQV RP » High to Data Valid for VCC = 5 V ± 10% 430 ns 2 0 NOTES: CE » and OE » are switched low after Power-Up. 1. The power supply may start to switch concurrently with RP » going Low. RP » is required to stay low, until VCC stays at recommended operating voltage. 2. The address access time and RP » high to data valid time are shown for 5.0 V VCC operation. Refer to the AC Characteristics Read Only Operations also. 26 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC AC Characteristics for WE » - Controlled Command Write Operations1 VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER TYP. VCC = 5.0 V ± 0.25 V VCC = 5.0 V ± 0.5 V MIN. tAVAV Write Cycle Time tVPWH MAX. MIN. UNITS NOTE MAX. 60 70 ns VPP Set up to WE Going High 100 100 ns tPHEL RP » Setup to CE » Going Low 400 430 ns tELWL CE » Setup to WE Going Low 0 0 ns tAVWH Address Setup to WE Going High 55 60 ns 2, 6 tDVWH Data Setup to WE Going High 55 60 ns 2, 6 tWLWH WE Pulse Width 55 60 ns tWHDX Data Hold from WE High 0 0 ns 2 tWHAX Address Hold from WE High 10 10 ns 2 tWHEH CE » Hold from WE High 10 10 ns tWHWL WE Pulse Width High 30 30 ns tGHWL Read Recovery before Write 0 0 ns tWHRL WE High to RY »/BY » Going Low tRHPL RP » Hold from Valid Status Register Data and RY »/BY » High 0 0 ns tPHWL RP » High Recovery to WE Going Low 1 1 µs tWHGL Write Recovery before Read 60 65 ns tQVVL VPP Hold from Valid Status Register Data and RY »/BY » High 0 0 µs 4.5 4.5 µs 4, 5 0.3 0.3 s 4 tWHQV1 Duration of Byte Write Operation tWHQV2 Duration of Block Erase Operation 100 13 100 3 ns 3 NOTES: 1. Read timing during write and erase are the same as for normal read. 2. Refer to command definition tables for valid address and data values. 3. Sampled, but not 100% tested. 4. Write/Erase durations are measured to valid Status Register (CSR) Data. 5. Byte write operations are typically performed with 1 Programming Pulse. 6. Address and Data are latched on the rising edge of WE » for all Command Write operations. 27 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory DEEP POWER-DOWN WRITE VALID WRITE ADDRESS AND DATA DATA-WRITE (DATA-WRITE) OR OR ERASE ERASE CONFIRM SETUP COMMAND COMMAND ADDRESSES (A) VIH (NOTE 1) VIL AUTOMATED DATA-WRITE OR ERASE DELAY AIN tAVAV READ COMPATIBLE STATUS REGISTER DATA tAVWH tWHAX ADDRESSES (A) VIH (NOTE 2) VIL tAVWH tWHAX tAVAV CE (E) (NOTE 3) AIN VIH VIL tWHGL tWHEH tELWL OE (G) VIH VIL tWHWL WE (W) tWHQV 1, 2 tGHWL VIH VIL tWLWH tWHDX tDVWH DATA (D/Q) VIH HIGH-Z VIL DIN DIN tPHWL RY/BY (R) DIN DIN DOUT tWHRL VOH VOL tRHPL RP (P) VIH (NOTE 4) VIL tVPWH tQVVL VPPH VPP (V) V PPL NOTES: 1. This address string depicts Data-Write/Erase cycles with corresponding verification via ESRD. 2. This address string depicts Data-Write/Erase cycles with corresponding verification via CSRD. 3. This cycle is invalid when using CSRD for verification during Data-Write/Erase operations. 4. RP low transition is only to show tRHPL; not valid for above Read and Write cycles. Figure 22. AC Waveforms for Command Write Operations 28 28F400SUT-NC60-20 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC AC Characteristics for CE » - Controlled Command Write Operations1 VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER TYP. VCC = 5.0 V ± 0.25 V VCC = 5.0 V ± 0.5 V MIN. tAVAV Write Cycle Time tPHWL MAX. MIN. UNITS NOTE MAX. 60 70 ns RP » Setup to WE Going Low 400 430 ns 3 tVPEH VPP Set up to CE » Going High 100 100 ns 3 tWLEL WE Setup to CE » Going Low 0 0 ns tAVEH Address Setup to CE » Going High 55 60 ns 2, 6 tDVEH Data Setup to CE » Going High 55 60 ns 2, 6 tELEH CE » Pulse Width 55 60 ns tEHDX Data Hold from CE » High 0 0 ns 2 tEHAX Address Hold from CE » High 10 10 ns 2 tEHWH WE Hold from CE » High 10 10 ns tEHEL CE » Pulse Width High 30 30 ns tGHEL Read Recovery before Write 0 0 ns tEHRL CE » High to RY »/BY » Going Low tRHPL RP » Hold from Valid Status Register Data and RY »/BY » High 0 0 ns tPHEL RP » High Recovery to CE » Going Low 1 1 µs tEHGL Write Recovery before Read 60 65 ns tQVVL VPP Hold from Valid Status Register Data and RY »/BY » High 0 0 µs tEHQV1 Duration of Byte Write Operation 4.5 4.5 µs 4, 5 tEHQV2 Duration of Block Erase Operation 0.3 0.3 s 4 100 13 100 ns 3 NOTES: 1. Read timing during write and erase are the same as for normal read. 2. Refer to command definition tables for valid address and data values. 3. Sampled, but not 100% tested. 4. Write/Erase durations are measured to valid Status Register (CSR) Data. 5. Byte Write operations are typically performed with 1 Programming Pulse. 6. Address and Data are latched on the rising edge of CE » for all Command Write operations. 29 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory DEEP POWER-DOWN ADDRESSES (A) (NOTE 1) WRITE VALID WRITE ADDRESS AND DATA DATA-WRITE (DATA-WRITE) OR OR ERASE ERASE CONFIRM SETUP COMMAND COMMAND VIH AUTOMATED DATA-WRITE OR ERASE DELAY AIN VIL tAVAV READ COMPATIBLE STATUS REGISTER DATA tAVEH tEHAX ADDRESSES (A) (NOTE 2) VIH tAVEH tAVAV WE (W) (NOTE 3) AIN VIL tEHAX VIH VIL tEHWH tWLEL OE (G) tEHGL VIH VIL tEHEL CE (E) tEHQV 1, 2 tGHEL VIH VIL tELEH tEHDX tDVEH DATA (D/Q) VIH HIGH-Z VIL DIN DIN tPHEL RY/BY (R) DIN DOUT DIN tEHRL VOH VOL tRHPL RP (P) VIH VIL (NOTE 4) tVPEH VPP (V) tQVVL VPPH VPPL NOTES: 1. This address string depicts Data-Write/Erase cycles with corresponding verification via ESRD. 2. This address string depicts Data-Write/Erase cycles with corresponding verification via CSRD. 3. This cycle is invalid when using CSRD for verification during Data-Write/Erase operations. 4. RP low transition is only to show tRHPL; not valid for above Read and Write cycles. Figure 23. Alternate AC Waveforms for Command Write Operations 30 28F400SUT-NC60-21 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC Erase and Byte Write Performance VCC = 5.0 V ± 0.5 V, TA = 0°C to +70°C SYMBOL PARAMETER TYP.(1) MIN. MAX. UNITS TEST CONDITIONS NOTE tWHRH1 Byte Write Time 13 µs 2 tWHRH2 Two-Byte Serial Write Time 20 µs 2, 3 tWHRH3 Word Write Time 20 µs 2, 4 tWHRH4 16KB Block Write Time 0.22 1.0 s Byte Write Mode tWHRH5 16KB Block Write Time 0.17 1.0 s Two-Byte Serial Write Mode 2, 3 tWHRH5 16KB Block Write Time 0.17 1.0 s Word Write Mode 2, 4 Block Erase Time (16KB) 0.6 10 s 2 s 2, 5 Full Chip Erase Time 8.8 - 14.4 2 NOTES: 1. 25°C, VPP = 5.0 V Sampled. 2. Excludes System-Level Overhead. 3. Two-Byte Serial Write mode is valid at x8-bit configuration only. 4. Word Write mode is valid at x16-bit configuration only. 5. Depends on the number of protected blocks. 31 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory 56TSOP (TSOP056-P-1420) 56 1 14.20 [0.559] 13.80 [0.543] 0.50 [0.020] TYP. 0.28 [0.011] 0.12 [0.005] 29 28 0.13 [0.005] 0.49 [0.019] 0.39 [0.015] 20.30 [0.799] 19.70 [0.776] 18.60 [0.732] 18.20 [0.717] 0.22 [0.009] 0.02 [0.001] 1.10 [0.043] 0.90 [0.035] 1.19 [0.047] MAX. 0.18 [0.007] 0.08 [0.003] PACKAGE BASE PLANE 19.30 [0.760] 18.70 [0.736] DIMENSIONS IN MM [INCHES] 32 MAXIMUM LIMIT MINIMUM LIMIT 56TSOP 4M (512K × 8, 256K × 16) Flash Memory LH28F400SU-NC 48TSOP (TSOP048-P-1218) 0.50 [0.020] TYP. 0.30 [0.012] 0.10 [0.004] 25 48 16.60 [0.654] 16.20 [0.638] 1 18.40 [0.724] 17.60 [0.693] 17.00 [0.669] 24 12.20 [0.480] 11.80 [0.465] 0.15 [0.006] 0.425 [0.017] 0.20 [0.008] 0.10 [0.004] 1.10 [0.043] 0.90 [0.035] 1.20 [0.047] MAX. 0.425 [0.017] DIMENSIONS IN MM [INCHES] MAXIMUM LIMIT MINIMUM LIMIT 0.20 [0.008] 0.00 [0.000] 48TSOP 33 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory 44SOP (SOP044-P-0600) 0.50 [0.020] 0.30 [0.012] 1.27 [0.050] TYP. 44 23 13.40 [0.528] 13.00 [0.512] 1 16.40 [0.646] 15.60 [0.614] 14.40 [0.567] SEE DETAIL 22 0.20 [0.008] 0.10 [0.004] 28.40 [1.118] 28.00 [1.102] 2.9 [0.114] 2.5 [0.098] DETAIL 1.275 [0.050] 0.15 [0.006] 1.275 [0.050] 0.25 [0.010] 0.05 [0.002] 2.9 [0.114] 2.5 [0.098] 3.25 [0.128] 2.45 [0.096] 0.25 [0.010] 0.05 [0.002] 1.275 [0.050] DIMENSIONS IN MM [INCHES] 0 - 10° 0.80 [0.031] MAXIMUM LIMIT MINIMUM LIMIT 44SOP ORDERING INFORMATION LH28F400SU Device Type X Package -NC## Speed 60 (VCC = 5.0 V ± 0.25 V) Access Time (ns) 80 (VCC = 5.0 V ± 0.50 V) T 56-pin, 1.2 mm x 14 mm x 20 mm TSOP (Type I) (TSOP056-P-1420) E 48-pin, 1.2 mm x 12 mm x 18 mm TSOP (Type I) (TSOP048-P-1218) N 44-pin, 600-mil SOP (SOP044-P-0600) 4M (512K x 8, 256K x 16) Flash Memory Example: LH28F400SUT-NC60 (4M (512K x 8, 256K x 16) Flash Memory, 60 ns, 56-pin TSOP) 28F400SUT-NC60-22 34 LH28F400SU-NC 4M (512K × 8, 256K × 16) Flash Memory LIFE SUPPORT POLICY SHARP components should not be used in medical devices with life support functions or in safety equipment (or similiar applications where component failure would result in loss of life or physical harm) without the written approval of an officer of the SHARP Corporation. WARRANTY SHARP warrants to Customer that the Products will be free from defects in material and workmanship under normal use and service for a period of one year from the date of invoice. Customer's exclusive remedy for breach of this warranty is that SHARP will either (i) repair or replace, at its option, any Product which fails during the warranty period because of such defect (if Customer promptly reported the failure to SHARP in writing) or, (ii) if SHARP is unable to repair or replace, SHARP will refund the purchase price of the Product upon its return to SHARP. This warranty does not apply to any Product which has been subjected to misuse, abnormal service or handling, or which has been altered or modified in design or construction, or which has been serviced or repaired by anyone other than SHARP. The warranties set forth herein are in lieu of, and exclusive of, all other warranties, express or implied. ALL EXPRESS AND IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR USE AND FITNESS FOR A PARTICULAR PURPOSE ARE SPECIFICALLY EXCLUDED. SHARP reserves the right to make changes in specifications at any time and without notice. SHARP does not assume any responsibility for the use of any circuitry described; no circuit patent licenses are implied. ® NORTH AMERICA EUROPE ASIA SHARP Electronics Corporation Microelectronics Group 5700 NW Pacific Rim Blvd., M/S 20 Camas, WA 98607, U.S.A. Phone: (360) 834-2500 Telex: 49608472 (SHARPCAM) Facsimile: (360) 834-8903 http://www.sharpmeg.com SHARP Electronics (Europe) GmbH Microelectronics Division Sonninstraße 3 20097 Hamburg, Germany Phone: (49) 40 2376-2286 Telex: 2161867 (HEEG D) Facsimile: (49) 40 2376-2232 SHARP Corporation Integrated Circuits Group 2613-1 Ichinomoto-Cho Tenri-City, Nara, 632, Japan Phone: (07436) 5-1321 Telex: LABOMETA-B J63428 Facsimile: (07436) 5-1532 ©1997 by SHARP Corporation Issued July 1996 Reference Code SMT96116