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参数资料
型号： ST72F623F2B1
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, PDIP20
封装： 0.300 INCH, LEAD FREE, SHRINK, PLASTIC, DIP-20
文件页数： 33/139页
文件大小： 1264K
代理商： ST72F623F2B1
128/139
Doc ID 6996 Rev 5
14 DEVICE CONFIGURATION AND ORDERING INFORMATION
Each device is available for production in user pro-
grammable versions (FLASH) as well as in factory
coded versions (ROM).
ST7262 devices are ROM versions.
ST72F62 FLASH devices are shipped to custom-
ers with a default content (FFh). This implies that
FLASH devices have to be configured by the cus-
tomer using the Option Byte while the ROM devic-
es are factory-configured.
14.1 OPTION BYTE
The Option Byte allows the hardware configuration
of the microcontroller to be selected.
The Option Byte has no address in the memory
map and can be accessed only in programming
mode using a standard ST7 programming tool.
The default content of the FLASH is fixed to FFh.
This means that all the options have “1” as their
default value.
Bits 7:6 = Reserved.
Bit 5 = WDGSW Hardware or software watchdog
This option bit selects the watchdog type.
0: Hardware enabled
1: Software enabled
Bit 4 = NEST
This option bit selects the nested interrupts fea-
ture.
0: Nested interrupt feature disabled
1: Nested interrupt feature enabled
Bit 3 = LVD Low Voltage Detector selection
This option bit selects the LVD.
0: LVD enabled
1: LVD disabled
Bit 2= Reserved.
Bit 1 = OSC12/6 Oscillator selection
This option bit selects the clock divider used to
drive the USB interface at 6MHz.
0: 6 MHz oscillator (no divider for USB)
1: 12 Mhz oscillator (2 divider for USB)
Bit 0 = FMP_R Memory Readout Protection
Readout protection, when selected provides a pro-
tection against program memory content extrac-
tion and against write access to Flash memory.
Erasing the option bytes when the FMP_R option
is selected will cause the whole memory to be
erased first and the device can be reprogrammed.
Refer to the ST7 Flash Programming Reference
Manual and section 4.3.1 on page 14 for more de-
tails.
0: Read-out protection enabled
1: Read-out protection disabled
14.2 DEVICE ORDERING INFORMATION AND TRANSFER OF CUSTOMER CODE
Customer code is made up of the ROM contents
and the list of the selected options (if any). The
ROM contents are to be sent on diskette, or by
electronic means, with the hexadecimal file in .S19
format generated by the development tool. All un-
used bytes must be set to FFh.
The selected options are communicated to STMi-
croelectronics using the correctly completed OP-
TION LIST appended.
Refer to application note AN1635 for information
on the counter listing returned by ST after code
has been transferred.
The STMicroelectronics Sales Organization will be
pleased to provide detailed information on con-
tractual points.
70
--
WDG
SW
NEST LVD
-
OSC
12/6
FMP_
R
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相关代理商/技术参数
参数描述
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