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TMS28F002SB80CDBJE Datasheet(PDF) 7 Page - Texas Instruments |
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TMS28F002SB80CDBJE Datasheet(HTML) 7 Page - Texas Instruments |
7 / 79 page TMS28F002Axy, TMS28F200Axy 262144 BY 8-BIT/131072 BY 16-BIT AUTO-SELECT BOOT-BLOCK FLASH MEMORIES SMJS826D – JANUARY 1996 – REVISED SEPTEMBER 1997 7 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 block memory maps (continued) 3FFFFh 3C000h 3BFFFh 3A000h 39FFFh 38000h 37FFFh 20000h 1FFFFh 00000h Address Range Boot Block 16K Addresses Parameter Block 8K Addresses Parameter Block 8K Addresses Main Block 96K Addresses Main Block 128K Addresses 8-Bit Configuration DQ15/A –1 Is LSB Address 1FFFFh 1E000h 1DFFFh 1D000h 1CFFFh 1C000h 1BFFFh 10000h 0FFFFh 00000h Address Range Boot Block 8K Addresses Parameter Block 4K Addresses Parameter Block 4K Addresses Main Block 48K Addresses Main Block 64K Addresses 16-bit Configuration A0 Is LSB Address NOTE A: The TMS28F002AxT is mapped the same way as the 8-bit configuration of the TMS28F200AxT and the LSB is A0. Figure 1. TMS28F200AxT ( Top Boot Block ) Memory Map (See Note A) Boot Block 16K Addresses Parameter Block 8K Addresses Parameter Block 8K Addresses Main Block 128K Addresses Main Block 96K Addresses 3FFFFh 20000h 1FFFFh 08000h 07FFFh 06000h 05FFFh 04000h 03FFFh 00000h Address Range 8-Bit Configuration DQ15/A –1 Is LSB Address 1FFFFh 10000h 0FFFFh 04000h 03FFFh 03000h 02FFFh 02000h 01FFFh 00000h Address Range Main Block 64K Addresses Main Block 48K Addresses Parameter Block 4K Addresses Parameter Block 4K Addresses Boot Block 8K Addresses 16-Bit Configuration A0 Is LSB Address NOTE A: The TMS28F002AxB is mapped the same way as the 8-bit configuration of the TMS28F200AxB and the LSB is A0. Figure 2. TMS28F200AxB (Bottom-Boot Block ) Memory Map (See Note A) boot-block data protection The 16K-byte boot block can be used to store key system data that is seldom changed in normal operation. Data in this block can be secured by using different combinations of the reset / deep power-down pin (RP), the write-protect pin (WP), and VPP supply levels. Table 2 shows a listing of these combinations. |
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