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M29W200BT55M1 Datasheet(PDF) 3 Page - STMicroelectronics |
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M29W200BT55M1 Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 22 page 3/22 M29W200BT, M29W200BB The blocks in the memory are asymmetrically ar- ranged, see Tables 3 and 4, Block Addresses. The first or last 64 Kbytes have been divided into four additional blocks. The 16 Kbyte Boot Block can be used for small initialization code to start the micro- processor, the two 8 Kbyte Parameter Blocks can be used for parameter storage and the remaining 32K is a small Main Block where the application may be stored. Chip Enable, Output Enable and Write Enable sig- nals control the bus operation of the memory. They allow simple connection to most micropro- cessors, often without additional logic. The memory is offered in TSOP48 (12 x 20mm) and SO44 packages and it is supplied with all the bits erased (set to ’1’). In order to meet environmental requirements, ST offers the M29W200B in ECOPACK® packages. ECOPACK packages are Lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum rat- ings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK speci- fications are available at: www.st.com. Table 2. Absolute Maximum Ratings (1) Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" 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 indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi- tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qual- ity documents. 2. Minimum Voltage may undershoot to –2V during transition and for less than 20ns during transitions. Symbol Parameter Value Unit TA Ambient Operating Temperature (Temperature Range Option 1) 0 to 70 °C Ambient Operating Temperature (Temperature Range Option 6) –40 to 85 °C TBIAS Temperature Under Bias –50 to 125 °C TSTG Storage Temperature –65 to 150 °C VIO (2) Input or Output Voltage –0.6 to 4 V VCC Supply Voltage –0.6 to 4 V VID Identification Voltage –0.6 to 13.5 V Table 3. Top Boot Block Addresses M29W200BT # Size (Kbytes) Address Range (x8) Address Range (x16) 6 16 3C000h-3FFFFh 1E000h-1FFFFh 5 8 3A000h-3BFFFh 1D000h-1DFFFh 4 8 38000h-39FFFh 1C000h-1CFFFh 3 32 30000h-37FFFh 18000h-1BFFFh 2 64 20000h-2FFFFh 10000h-17FFFh 1 64 10000h-1FFFFh 08000h-0FFFFh 0 64 00000h-0FFFFh 00000h-07FFFh Table 4. Bottom Boot Block Addresses M29W200BB # Size (Kbytes) Address Range (x8) Address Range (x16) 6 64 30000h-3FFFFh 18000h-1FFFFh 5 64 20000h-2FFFFh 10000h-17FFFh 4 64 10000h-1FFFFh 08000h-0FFFFh 3 32 08000h-0FFFFh 04000h-07FFFh 2 8 06000h-07FFFh 03000h-03FFFh 1 8 04000h-05FFFh 02000h-02FFFh 0 16 00000h-03FFFh 00000h-01FFFh |
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