SPNS174
–
SEPTEMBER 2011
4.10 Flash Memory
4.10.1 Flash Memory Configuration
Flash Bank:
A separate block of logic consisting of 1 to 16 sectors. Each flash bank normally has a
customer-OTP and a TI-OTP area. These flash sectors share input/output buffers, data paths, sense
amplifiers, and control logic.
Flash Sector:
A contiguous region of flash memory which must be erased simultaneously due to physical
construction constraints.
Flash Pump:
A charge pump which generates all the voltages required for reading, programming, or
erasing the flash banks.
Flash Module:
Interface circuitry required between the host CPU and the flash banks and pump module.
Table 4-23. Flash Memory Banks and Sectors
Memory Arrays (or Banks)
(1)
BANK0 (1.5MBytes)
Sector
No.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
BANK1 (1.5MBytes)
0
1
2
3
4
5
6
7
8
9
10
11
BANK7 (64kBytes) for EEPROM emulation
(2) (3)
Segment
32K Bytes
32K Bytes
32K Bytes
32K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
128K Bytes
16K Bytes
16K Bytes
16K Bytes
16K Bytes
Low Address
0x0000_0000
0x0000_8000
0x0001_0000
0x0001_8000
0x0002_0000
0x0004_0000
0x0006_0000
0x0008_0000
0x000A_0000
0x000C_0000
0x000E_0000
0x0010_0000
0x0012_0000
0x0014_0000
0x0016_0000
0x0018_0000
0x001A_0000
0x001C_0000
0x001E_0000
0x0020_0000
0x0022_0000
0x0024_0000
0x0026_0000
0x0028_0000
0x002A_0000
0x002C_0000
0x002E_0000
0xF020_0000
0xF020_4000
0xF020_8000
0xF020_C000
High Address
0x0000_7FFF
0x0000_FFFF
0x0001_FFFF
0x0003_FFFF
0x0005_FFFF
0x0007_FFFF
0x0009_FFFF
0x000B_FFFF
0x000D_FFFF
0x000F_FFFF
0x0011_FFFF
0x0013_FFFF
0x0015_FFFF
0x0017_FFFF
0x0019_FFFF
0x001B_FFFF
0x001D_FFFF
0x001F_FFFF
0x0021_FFFF
0x0023_FFFF
0x0025_FFFF
0x0027_FFFF
0x0029_FFFF
0x002B_FFFF
0x002D_FFFF
0x002F_FFFF
0xF020_3FFF
0xF020_7FFF
0xF020_BFFF
0xF020_FFFF
0x0001_7FFF
0
1
2
3
(1)
(2)
(3)
The Flash banks are 144-bit wide bank with ECC support.
The flash bank7 can be programmed while executing code from flash bank0 or bank1.
Code execution is not allowed from flash bank7.
Copyright
©
2011, Texas Instruments Incorporated
System Information and Electrical Specifications
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