参数资料
型号: ST7263BK1B/XXX
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, PDIP32
封装: 0.400 INCH, LEAD FREE, SHRINK, PLASTIC, DIP-32
文件页数: 72/140页
文件大小: 1423K
代理商: ST7263BK1B/XXX
ST7263B
37/140
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 17 on page 22). 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 (PB1 on SO24) out-
puts the USB output 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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