STM32W108HB datasheet(60/278 Pages) STMICROELECTRONICS

Part #	STM32W108HB

Description	High-performance, IEEE 802.15.4 wireless system-on-chip with up to 256 Kbytes of embedded Flash memory

PDF	278 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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60 / 278 page

System modules

STM32W108HB STM32W108CC STM32W108CB STM32W108CZ

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Doc ID 16252 Rev 14

6.4.4

Event timer

The SysTick timer is an ARM® standard system timer in the NVIC. The SysTick timer can

be clocked from either the FCLK (the clock going into the CPU) or the Sleep Timer clock.

FCLK is either the SCLK or PCLK as selected by CLK_CPUCR (see Section 6.3.5: Clock

switching on page 51).

6.4.5

Slow timer (MAC timer, Watchdog, and Sleeptimer) control and status

registers

These registers are powered from the always-on power domain.

All registers are only writable when in System mode

MACTimer counter register (MACTMR_CNTR)

Address:

0x4000 2038

Reset value:

0x0000 0000

Reserved, must be kept at reset value

CNT[19:0]: MAC timer counter value

MACTimer counter register (MACTMR_CR)

Address:

0x4000 208C

Reset value:

0x0000 0000

Reserved, must be kept at reset value

RST: MAC timer reset

EN: MAC timer enable

Reserved

CNT[19:16]

CNT[15:0]

Bits [31:20]

Bits [19:0]

Reserved

RST

Bits [31:2]

Bit 1

Bit 0

STM32W108HB Datasheet(PDF) 60 Page - STMicroelectronics