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参数资料
型号： ST7FSCR1E4U1
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, QCC64
封装： QFN-64
文件页数： 9/101页
文件大小： 4506K
代理商： ST7FSCR1E4U1
ST7SCR1E4 ST7SCR1R4
15/101
4 FLASH PROGRAM MEMORY
4.1 Introduction
The ST7 dual voltage High Density Flash (HD-
Flash) is a non-volatile memory that can be electri-
cally erased as a single block or by individual sec-
tors and programmed on a Byte-by-Byte basis us-
ing an external VPP supply.
The HDFlash devices can be programmed and
erased off-board (plugged in a programming tool)
or on-board using ICP (In-Circuit Programming) or
IAP (In-Application Programming).
The array matrix organisation allows each sector
to be erased and reprogrammed without affecting
other sectors.
4.2 Main Features
■ Three Flash programming modes:
– Insertion in a programming tool. In this mode,
all sectors including option bytes can be pro-
grammed or erased.
– ICP (In-Circuit Programming). In this mode, all
sectors including option bytes can be pro-
grammed or erased without removing the de-
vice from the application board.
– IAP (In-Application Programming) In this
mode, all sectors except Sector 0, can be pro-
grammed or erased without removing the de-
vice from the application board and while the
application is running.
■ ICT (In-Circuit Testing) for downloading and
executing user application test patterns in RAM
■ Read-out protection
■ Register Access Security System (RASS) to
prevent accidental programming or erasing
4.3 Structure
The Flash memory is organised in sectors and can
be used for both code and data storage.
Depending on the overall FLASH memory size in
the microcontroller device, there are up to three
user sectors (see Table 4). Each of these sectors
can be erased independently to avoid unneces-
sary erasing of the whole Flash memory when only
a partial erasing is required.
The first two sectors have a fixed size of 4 Kbytes
(see Figure 8). They are mapped in the upper part
of the ST7 addressing space so the reset and in-
terrupt vectors are located in Sector 0 (F000h-
FFFFh).
Table 4. Sectors available in FLASH devices
Figure 8. Memory map and sector address
Flash Memory Size
(bytes)
Available Sectors
4K
Sector 0
8K
Sectors 0,1
> 8K
Sectors 0,1, 2
4 Kbytes
SECTOR 1
SECTOR 0
SECTOR 2
16K USER FLASH MEMORY SIZE
FFFFh
F000h
EFFFh
E000h
DFFFh
C000h
8Kbytes
ex.: user program
ex.: user data
ex.: user system library
+ IAP BootLoader
+ library
相关PDF资料
PDF描述
ST7SCR1T1/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
ST7SCR1E4U1/XXX MICROCONTROLLER, QCC24
ST7SCR1E4M1/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24
ST7L34F2MCRE/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
ST7L35F2MARE/XXX 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
相关代理商/技术参数
参数描述
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