參數(shù)資料
型號(hào)： TMS3705A
廠商： Texas Instruments, Inc.
英文描述： RADIO FREQUENCY I DENTIFICATION SYSTEMS
中文描述： 射頻我擠密系統(tǒng)
文件頁(yè)數(shù)： 10/54頁(yè)
文件大?。?/td> 785K
代理商： TMS3705A
TMS370Cx9x
8-BIT MICROCONTROLLER
SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997
10
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
peripheral file (PF) (continued)
Table 4. TMS370Cx9x Peripheral File Address Map
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1010h–101Fh
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data EEPROM
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1000h–100Fh
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1020h–103Fh
P010–P01F
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DESIGNATOR
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P000–P00F
P020–P03F
System and EEPROM/EPROM control registers
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Reserved
Digital I/O port control registers
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DESCRIPTION
1030h–103Fh
P030–P03F
Reserved
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The TMS370Cx9x devices contain 256 bytes of data EEPROM and have a memory map beginning at location
1F00h and continuing through location 1FFFh. Writing to the data EEPROM module is controlled by the data
EEPROM control register (DEECTL) and the write-protection register (WPR). Programming algorithm
examples are available in the TMS370 Family User’s Guide(literature number SPNU127), or the TMS370
Family Data Manual (literature number SPNS014B). The data EEPROM features include the following:
Programming:
–
Bit, byte, and block write/erase modes
–
Internal charge pump circuitry: No external EEPROM programming voltage supply is needed.
–
Control register: Data EEPROM programming is controlled by the data EEPROM control register
(DEECTL) located in the PF frame beginning at location P01A.
–
In-circuit programming capability: There is no need to remove the device to program.
Write-protection: Writes to the data EEPROM are disabled during the following conditions:
–
Reset: All programming of the data EEPROM module is halted.
–
Write protection active: there is one write-protect bit per 32-byte EEPROM block.
–
Low-power mode operation
Write protection can be overridden by applying 12 V to the MC pin.
Table 5 shows the memory map of the control registers.
Table 5. Data EEPROM and Program EPROM Control Registers Memory Map
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Data EEPROM control register
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101Bh (P01B)
EPCTL
—
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Reserved
101Ch (P01C)
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Program EPROM control register
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