TMS28F004AEB60CDCDL datasheet(7/80 Pages) TI

7 / 80 page

TMS28F004Axy, TMS28F400Axy

524288 BY 8-BIT/262144 BY 16-BIT

AUTO-SELECT BOOT-BLOCK FLASH MEMORIES

SMJS829A – JANUARY 1996 – REVISED AUGUST 1997

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

block memory maps (continued)

7FFFFh

7C000h

7BFFFh

7A000h

79FFFh

78000h

77FFFh

60000h

5FFFFh

40000h

3FFFFh

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

3FFFFh

3E000h

3DFFFh

3D000h

3CFFFh

3C000h

3BFFFh

30000h

2FFFFh

20000h

1FFFFh

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

Main Block

128K Addresses

Main Block

64K Addresses

Main Block

128K Addresses

Main Block

64K Addresses

NOTE A: The TMS28F004AxT is mapped the same as the 8-bit configuration of the TMS28F400AxT except that the LSB is A0.

Figure 1. TMS28F400AxT ( Top Boot Block ) Memory Map (See Note A)

7FFFFh

60000h

5FFFFh

40000h

3FFFFh

20000h

1FFFFh

08000h

07FFFh

06000h

05FFFh

04000h

03FFFh

00000h

Address

Range

Main Block

128K Addresses

Main Block

128K Addresses

Main Block

128K Addresses

Parameter Block

8K Addresses

Boot Block

16K Addresses

8-Bit Configuration

DQ15/A –1 Is LSB Address

3FFFFh

30000h

2FFFFh

20000h

1FFFFh

10000h

0FFFFh

04000h

03FFFh

03000h

02FFFh

02000h

01FFFh

00000h

Address

Range

Main Block

64K Addresses

Main Block

64K Addresses

Main Block

64K Addresses

Parameter Block

4K Addresses

Boot Block

8K Addresses

16-Bit

Configuration

A0 Is LSB Address

Parameter Block

8K Addresses

Parameter Block

4K Addresses

Main Block

96K Addresses

Main Block

48K Addresses

NOTE A: The TMS28F004AxB is mapped the same as the 8-bit configuration of the TMS28F400AxB except that the LSB is A0.

Figure 2. TMS28F400AxB (Bottom Boot Block ) Memory Map (See Note A)

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