NUC100LC1BN Nuvoton Technology Corporation of America, NUC100LC1BN Datasheet - Page 156

• Manufacturer Part Number: NUC100LC1BN
• Description: IC MCU 32BIT 32KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r

Specifications of NUC100LC1BN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, I²S, LVD, POR, PS2, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.2.6.2
SysTick Control and Status （SYST_CSR）
Register
SYST_CSR
Bits
[31:17]
[16]
[15:3]
[2]
[1]
[0]
31
23
15
System Timer Control Register Description
7
NuMicro™ NUC100 Series Technical Reference Manual
Offset
SCS_BA+0x10
Descriptions
Reserved
COUNTFLAG
Reserved
CLKSRC
TICKINT
ENABLE
30
22
14
6
Reserved
R/W
R/W
Reserved
Returns 1 if timer counted to 0 since last time this register was read.
COUNTFLAG is set by a count transition from 1 to 0.
COUNTFLAG is cleared on read or by a write to the Current Value register.
Reserved
1 = Core clock used for SysTick.
0 = Clock source is (optional) external reference clock
1 = Counting down to 0 will cause the SysTick exception to be pended. Clearing the
0 = Counting down to 0 does not cause the SysTick exception to be pended. Software
1 = The counter will operate in a multi-shot manner
0 = The counter is disabled
29
21
13
5
SysTick Current Value register by a register write in software will not cause SysTick to
be pended.
can use COUNTFLAG to determine if a count to zero has occurred.
Description
SysTick Control and Status Register
Reserved
28
20
12
- 156 -
4
Reserved
Reserved
27
19
11
3
Publication Release Date: Dec. 22, 2010
CLKSRC
26
18
10
2
TICKINT
25
17
9
1
Revision V1.06
Reset Value
0x0000_0000
COUNTFLAG
ENABLE
24
16
8
0