参数资料
型号: ST72611F1M1
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20
封装: 0.300 INCH, PLASTIC, SOP-20
文件页数: 25/77页
文件大小: 1178K
代理商: ST72611F1M1
ST7261
31/77
8.3 MISCELLANEOUS REGISTER
MISCELLANEOUS REGISTER
Read Write
Reset Value - 0000 0000 (00h)
Bits 7:4 = Reserved
Bits 3:2 = SMS[1:0] Slow Mode Selection
These bits select the Slow Mode frequency (de-
pending on the oscillator frequency configured by
option byte).
Bit 1 = USBOE USB Output Enable
0: PA0 port free for general purpose I/O
1: USBOE alternate function enabled. The USB
output enable signal is output on the PA0 port
(at “1” when the ST7 USB is transmitting data).
Bit 0 = MCO Main Clock Out
0: PB0 port free for general purpose I/O
1: MCO alternate function enabled (fCPU output on
PB0 I/O port)
Related Documentation
AN 970: SPI Communication between ST7 and
EEPROM
AN1045: S/W implementation of I2C bus master
AN1048: Software LCD driver
70
-
SMS1 SMS0
US-
BOE
MCO
OSC12/6
SMS1 SMS0
Slow Mode Frequency
(MHz.)
fOSC= 6 MHz.
00
4
01
2
10
1
11
0.5
fOSC= 12 MHz.
00
8
01
4
10
2
11
1
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