STM32W108C8U63TR STMicroelectronics, STM32W108C8U63TR Datasheet - Page 40
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STM32W108C8U63TR
Manufacturer Part Number
STM32W108C8U63TR
Description
16/32-BITS MICROS
Manufacturer
STMicroelectronics
Series
STM32r
Datasheet
1.STM32W108C8U63TR.pdf
(207 pages)
Specifications of STM32W108C8U63TR
Applications
RF4CE, Remote Control
Core Processor
ARM® Cortex-M3™
Program Memory Type
FLASH (64 kB)
Controller Series
STM32W
Ram Size
8K x 8
Interface
I²C, SPI, UART/USART
Number Of I /o
24
Voltage - Supply
1.18 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-VFQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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31
15
31
15
30
14
30
14
In addition to these modes, further automatic control is invoked by hardware when flash
programming is enabled. To ensure accuracy of the flash controller's timers, the FCLK
frequency is forced to 12 MHz during flash programming and erase operations.
Table 4.
Clock switching registers
XTAL or OSCHF main clock select register (OSC24M_CTRL)
Address offset: 0x4000 401C
Reset value: 0x0000 0000
CPU clock source select register (CPU_CLK_SEL)
Address offset: 0x4000 4020
Reset value: 0x0000 0000
Bit 1 OSC24M_EN: When set to ‘1’, 24 MHz crystal oscillator is main clock.
Bit 0 OSC24M_SEL: When set to ‘0’, OSCHF is selected. When set to ‘1’, XTAL is selected.
OSC24M_SEL CPU_CLK_SEL
1 (OSC24M)
1 (OSC24M)
29
13
29
13
0 (OSCHF)
0 (OSCHF)
28
12
28
12
System clock modes
27
11
27
11
0 (Normal CPU)
0 (Normal CPU)
1 (Fast CPU)
1 (Fast CPU)
26
10
26
10
25
25
9
9
Reserved
Doc ID 018587 Rev 1
Rserved
24
24
8
8
12 MHz
12 MHz
24 MHz
24 MHz
SCLK
Reserved
Reserved
23
7
23
7
22
6
22
6
12 MHz
12 MHz
6 MHz
6 MHz
PCLK
21
5
21
5
20
4
20
4
Erase Inactive
Program/
12 MHz
12 MHz
24 MHz
6 MHz
Flash
19
3
19
3
18
2
18
f
2
CLK
STM32W108C8
Erase Active
OSC24
Program/
M_EN
17
12 MHz
12 MHz
12 MHz
12 MHz
1
rws
17
Flash
1
LK_SEL
CPU_C
OSC24
M_SEL
rws
16
rws
0
16
0
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