MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 395

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RM0008
Note:
16.4.4
15
15
15
w
r
14
14
14
w
r
Bits 15:0 PRL[15:0]: RTC prescaler reload value low
Bits 15:4 Reserved
Bits 15:0 RTC_DIV[15:0]: RTC clock divider low
Bits 3:0 RTC_DIV[19:16]: RTC clock divider high
RTC prescaler load register low (RTC_PRLL)
Address offset: 0x0C
Write only (see
Reset value: 0x8000
If the input clock frequency (f
signal period of 1 second.
RTC prescaler divider register (RTC_DIVH / RTC_DIVL)
During each period of TR_CLK, the counter inside the RTC prescaler is reloaded with the
value stored in the RTC_PRL register. To get an accurate time measurement it is possible to
read the current value of the prescaler counter, stored in the RTC_DIV register, without
stopping it. This register is read-only and it is reloaded by hardware after any change in the
RTC_PRL or RTC_CNT registers.
RTC prescaler divider register high (RTC_DIVH)
Address offset: 0x10
Reset value: 0x0000
RTC prescaler divider register low (RTC_DIVL)
Address offset: 0x14
Reset value: 0x8000
13
13
13
w
r
These bits are used to define the counter clock frequency according to the following formula:
f
TR_CLK
12
12
12
w
r
= f
11
11
11
Section 16.3.4 on page
w
r
RTCCLK
10
10
10
w
r
Reserved
/(PRL[19:0]+1)
w
9
9
9
RTCCLK
r
Doc ID 13902 Rev 9
RTC_DIV[15:0]
w
8
8
8
r
PRL[15:0]
) is 32.768 kHz, write 7FFFh in this register to get a
390)
w
7
7
7
r
w
6
6
6
r
w
5
5
5
r
w
4
4
4
r
Real-time clock (RTC)
w
3
3
3
r
r
RTC_DIV[19:16]
w
2
2
2
r
r
w
1
1
1
r
r
395/995
w
0
0
0
r
r