ST72621J2 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST72621J2
STMicroelectronics
'ST72621J2' PDF : 133 Pages View PDF
ST7262
9.3 MISCELLANEOUS REGISTER
MISCELLANEOUS REGISTER
Read Write
Reset Value - 0000 0000 (00h)
7
0
-
-
-
-
SMS1 SMS0
US-
BOE
MCO
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).
OSC12/6
SMS1
SMS0
Slow Mode Frequency
(MHz.)
0
0
4
0
1
2
fOSC= 6 MHz.
1
0
1
1
1
0.5
0
0
8
0
1
4
fOSC= 12 MHz. 1
0
2
1
1
1
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)
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