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ST7263B Folha de dados(PDF) 32 Page - STMicroelectronics

Nome de Peças ST7263B
Descrição Electrónicos  LOW SPEED USB 8-BIT MCU FAMILY WITH FLASH/ROM, UP TO 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I²C
PDF  132 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7263B Folha de dados(HTML) 32 Page - STMicroelectronics

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10 MISCELLANEOUS REGISTER
Address: 0009h
—
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:3 = Reserved
Bit 2 = SMS
Slow Mode Select.
This bit is set by software and only cleared by hard-
ware after a reset. If this bit is set, it enables the use
of an internal divide-by-2 clock divider (refer to Fig-
ure 15 on page 19). The SMS bit has no effect on
the USB frequency.
0: Divide-by-2 disabled and CPU clock frequency
is standard
1: Divide-by-2 enabled and CPU clock frequency is
halved.
Bit 1 = USBOE
USB enable.
If this bit is set, the port PC2 outputs the USB out-
put enable signal (at “1” when the ST7 USB is
transmitting data).
Unused bits 7-4 are set.
Bit 0 = MCO
Main Clock Out selection
This bit enables the MCO alternate function on the
PA0 I/O port. It is set and cleared by software.
0: MCO alternate function disabled (I/O pin free for
general-purpose I/O)
1: MCO alternate function enabled (fCPU on I/O
port)
70
--
---
SMS
USBOE
MCO



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