參數(shù)資料
型號(hào)： TMP470R1B768PGE
廠(chǎng)商： Texas Instruments, Inc.
英文描述： 16/32-Bit RISC Flash Microcontroller
中文描述： 16/32位RISC閃存微控制器
文件頁(yè)數(shù)： 14/50頁(yè)
文件大?。?/td> 393K
代理商： TMP470R1B768PGE
www.ti.com
TMS470R1B768
16/32-Bit RISC Flash Microcontroller
SPNS108A–AUGUST 2005–REVISED AUGUST 2006
Flash Pipeline Mode
When in pipeline mode, the flash operates with a system clock frequency of up to 60 MHz (versus a system
clock in normal mode of up to 30 MHz). Flash in pipeline mode is capable of accessing 64-bit words and
provides two 32-bit pipelined words to the CPU. Also in pipeline mode, the flash can be read with no wait states
when memory addresses are contiguous (after the initial 1-or 2-wait-state reads).
NOTE:
After a system reset, pipeline mode is disabled (ENPIPE bit [FMREGOPT.0] is a 0).
In other words, the B768 device powers up and comes out of reset in non-pipeline
mode. Furthermore, setting the flash configuration mode bit (GBLCTRL.4) will
override pipeline mode.
Flash Program and Erase
The B768 device flash contains three 256K-byte memory arrays (or banks) for a total of 768K bytes of flash and
consists of 18 sectors. These 18 sectors are sized as follows:
Table 4. B768 Flash Memory Banks and Sectors
MEMORY ARRAYS
(OR BANKS)
SECTOR NO.
SEGMENT
LOW ADDRESS
HIGH ADDRESS
0
1
2
3
4
5
6
7
8
9
16K Bytes
16K Bytes
32K Bytes
32K Bytes
32K Bytes
32K Bytes
32K Bytes
32K Bytes
16K Bytes
16K Bytes
0x0000_0000
0x0000_4000
0x0000_8000
0x0001_0000
0x0001_8000
0x0002_0000
0x0002_8000
0x0003_0000
0x0003_8000
0x0003_C000
0x0000_3FFF
0x0000_7FFF
0x0000_FFFF
0x0001_7FFF
0x0001_FFFF
0x0002_7FFF
0x0002_FFFF
0x0003_7FFF
0x0003_BFFF
0x0003_FFFF
BANK0
(256K Bytes)
0
1
2
3
64K Bytes
64K Bytes
64K Bytes
64K Bytes
0x0004_0000
0x0005_0000
0x0006_0000
0x0007_0000
0x0004_FFFF
0x0005_FFFF
0x0006_FFFF
0x0007_FFFF
BANK1
(256K Bytes)
0
1
2
3
64K Bytes
64K Bytes
64K Bytes
64K Bytes
0x0008_0000
0x0009_0000
0x000A_0000
0x000B_0000
0x0008_FFFF
0x0009_FFFF
0x000A_FFFF
0x000B_FFFF
BANK2
(256K Bytes)
The minimum size for an erase operation is one sector. The maximum size for a program operation is one 16-bit
word. For more detailed information on flash program and erase operations, see the TMS470R1x F05 Flash
Reference Guide (literature number SPNU213).
NOTE:
The flash external pump voltage (V
CCP
) is required for all operations (program,
erase, and read).
HET RAM
The B768 device contains HET RAM. The HET RAM has a 128-instruction capability. The HET RAM is
configurable by the SYS module to be addressed within the range of 0x0000_0000 to 0xFFE0_0000. The HET
RAM is addressed through memory select 4.
14
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