RM46L450
RM46L850
www.ti.com
SPNS184 –SEPTEMBER 2012
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)
Sector
No.
Segment
Low Address
High Address
BANK0 (1.25MBytes)
0
1
16K Bytes
16K Bytes
16K Bytes
16K Bytes
16K Bytes
16K Bytes
32K 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
0x0000_0000
0x0000_4000
0x0000_8000
0x0000_C000
0x0001_0000
0x0001_4000
0x0001_8000
0x0002_0000
0x0004_0000
0x0006_0000
0x0008_0000
0x000A_0000
0x000C_0000
0x000E_0000
0x0010_0000
0x0012_0000
0xF020_0000
0xF020_4000
0xF020_8000
0xF020_C000
0x0000_3FFF
0x0000_7FFF
0x0000_BFFF
0x0000_FFFF
0x0001_3FFF
0x0001_7FFF
0x0001_FFFF
0x0003_FFFF
0x0005_FFFF
0x0007_FFFF
0x0009_FFFF
0x000B_FFFF
0x000D_FFFF
0x000F_FFFF
0x0011_FFFF
0x0013_FFFF
0xF020_3FFF
0xF020_7FFF
0xF020_BFFF
0xF020_FFFF
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
BANK7 (64kBytes) for EEPROM emulation
1
2
3
4.10.2 Main Features of Flash Module
•
•
•
•
•
Support for multiple flash banks for program and/or data storage
Simultaneous read access on a bank while performing program or erase operation on any other bank
Integrated state machines to automate flash erase and program operations
Pipelined mode operation to improve instruction access interface bandwidth
Support for Single Error Correction Double Error Detection (SECDED) block inside Cortex-R4F CPU
–
Error address is captured for host system debugging
•
Support for a rich set of diagnostic features
Copyright © 2012, Texas Instruments Incorporated
System Information and Electrical Specifications
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