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参数资料
型号： ST72F652R4T1
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, PQFP64
封装： 14 X 14 MM, TQFP-64
文件页数： 61/160页
文件大小： 974K
代理商： ST72F652R4T1
ST7265
153/160
15 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). FLASH devices are
shipped to customers with a default content (FFh),
while ROM factory coded parts contain the code
supplied by the customer. This implies that FLASH
devices have to be configured by the customer us-
ing the Option Bytes while the ROM devices are
factory-configured.
15.1 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 (for example using a standard ST7 program-
ming tool). The default content of the FLASH is
fixed to FFh. This means that all the options have
“1” as their default value.
In masked ROM devices, the option byte is fixed in
hardware by the ROM code (see option list)
OPT7 = Reserved. Must be kept at 1.
OPT6 = PE5PU
I/O Port PE5 Pull-up Option
This option bit determines if a pull-up is connected
on Port E5.
0: Pull up present on PE5
1: No pull-up on PE5
When PE5PU=00:
– For input, software can enable or disable the
pull-up by programming PEOR.5 and PED-
DR.5=0.
– For output, the pull-up is enabled when Open
Drain is selected by programming PEOR.5= and
PEDDR.5=1.
Refer to the following table.
OPT5:4 = PSMOD[1:0]
Power Supply Mode
These option bits configure the power supply
mode.
OPT3 = Reserved. Must be kept at 1.
OPT2= WDG SW
Hardware or software watchdog
This option bit selects the watchdog type.
0: Hardware (watchdog always enabled)
1: Software (watchdog to be enabled by software)
OPT1 = USBEN
0: USBEN alternate function disabled. Port F4 is
free for general purpose I/O
1: USBEN alternate function enabled on Port F4
(function controlled by hardware)
OPT0= FMP_R
Flash memory read-out protection
This option indicates if the user flash memory is
protected against read-out piracy. This protection
is based on read and a write protection of the
memory in test modes and IAP. Erasing the option
bytes when the FMP_R option is selected induce
the whole user memory erasing first.
0: Read-out protection disabled
1: Read-out protection enabled
70
-
PE5
PU
PS
MOD
1
PS
MOD
0
-
WDG
SW
USB
EN
FMP_
R
Configuration
PE5PU
OPTIO N
PEOR.5
PEDDR.5
Input floating
0
00
Output Open Drain
with Pull-up
01
Input with pull-up
1
0
Output push pull
1
Input floating
1
00
Output Open Drain
0
1
Input floating
1
0
Output push pull
1
Mode
OPT5
OPT4
Stand-alone mode forced
0
Dual Supply (normal) Mode
x
1
USB mode forced
1
0
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