ST72P623 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72P623

LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

STMicroelectronics 

ST7262xxx

9.3 MISCELLANEOUS REGISTER

MISCELLANEOUS REGISTER

Read Write

Reset Value - 0000 0000 (00h)

7

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

0

(at “1” when the ST7 USB is transmitting data).

-

-

-

-

SMS1 SMS0

US-

BOE

MCO

Bit 0 = MCO Main Clock Out

0: PB0 port free for general purpose I/O

Bits 7:4 = Reserved

1: MCO alternate function enabled (fCPU output on

PB0 I/O port)

) Bits 3:2 = SMS[1:0] Slow Mode Selection

t(s These bits select the Slow Mode frequency (de-

pending on the oscillator frequency configured by

uc option byte).

rod OSC12/6

SMS1

SMS0

Slow Mode Frequency

(MHz.)

P 0

0

4

te 0

1

2

fOSC= 6 MHz.

1

0

1

le 1

1

0.5

so 0

0

8

b 0

1

4

O fOSC= 12 MHz. 1

0

2

Obsolete Product(s) - 1

1

1

40/139

Doc ID 6996 Rev 5

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