參數資料
型號: ST72124J2B7
廠商: 意法半導體
英文描述: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述: 8位單電壓閃存,ADC和16位定時器,SPI和脊髓損傷界面微控制器
文件頁數: 49/125頁
文件大小: 776K
代理商: ST72124J2B7
ST72334J/N, ST72314J/N, ST72124J
49/125
MISCELLANEOUS REGISTERS
(Cont’d)
MISCELLANEOUS REGISTER 2 (MISCR2)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:6 =
Reserved
Must always be cleared
Bit 5:4 =
BC[1:0]
Beep control
These 2 bits select the PF1 pin beep capability.
The beep output signal is available in ACTIVE-
HALT mode but has to be disabled to reduce the
consumption.
Bit 3:2 =
Reserved
Must always be cleared
Bit 1 =
SSM
SS mode selection
It is set and cleared by software.
0: Normal mode - SS uses information coming
from the SS pin of the SPI.
1: I/O mode, the SPI uses the information stored
into bit SSI.
Bit 0 =
SSI
SS internal mode
This bit replaces pin SSof theSPI when bitSSM is
set to 1. (seeSPI description). It is set and cleared
by software.
Table 11. Miscellaneous Register Map and Reset Values
7
0
-
-
BC1
BC0
-
-
SSM
SSI
BC1 BC0
Beep mode with f
OSC
=16MHz
Off
0
0
0
1
~2-KHz
Output
Beep signal
~50% duty cycle
1
0
~1-KHz
1
1
~500-Hz
Address
(Hex.)
Register
Label
7
6
5
4
3
2
1
0
0020h
MISCR1
Reset Value
IS11
0
IS10
0
MCO
0
IS21
0
IS20
0
CP1
0
CP0
0
SMS
0
0040h
MISCR2
Reset Value
0
0
BC1
0
BC0
0
0
0
SSM
0
SSI
0
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