STR720 datasheet(147/401 Pages) STMICROELECTRONICS

Part #	STR720

Description	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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147 / 401 page

STR720 - RESET AND CLOCK CONTROL UNIT (RCCU)

147/401

Bit 2 = Reserved. Give ‘0’ when read and must be written to ‘0’.

Bit 1 = WDGRST_F: watchdog reset status flag

This bit is read only.

0: No Watchdog reset occurred.

1: Watchdog reset occurred.

Bit 0 = SWRST_F: software reset status flag

This bit is read only.

0: No software reset occurred.

1: Software reset occurred.

CLocK ConTroL register (CLKCTL)

Address Offset: 0Ch

Reset value: 0000h

This register is write protected and can be unlocked using REG_PROT bit in SYSPROT

Bit 15:4 = Reserved. Give ‘0’ when read and must be written to ‘0’.

Bit 3 = SWRST: software reset bit

0: No software reset occurs.

1: Software reset occurs.

Bit 2 = DIV2: DIV2 select

0: Select CLK as PLLCLKREF

1: Select CLK/2 as PLLCLKREF

Bit 1 = IDLE: IDLE mode select bit

0: IDLE mode not selected

1: Select IDLE mode

Bit 0 = SLOW: Slow mode select bit

0: SLOW mode not selected

1: Select SLOW mode

765432

Reserved

SWRS

DIV2

IDLE

SLOW

-rw

STR720 Datasheet(PDF) 147 Page - STMicroelectronics