M052LAN Nuvoton Technology Corporation of America, M052LAN Datasheet - Page 125

• Manufacturer Part Number: M052LAN
• Description: IC MCU 32BIT 8KB FLASH 48LQFP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro M051™r

Specifications of M052LAN

• Core Processor: ARM Cortex-M0
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 40
• Program Memory Size: 8KB (8K 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: -

Clock Source Select Control Register 1（CLKSEL1）
NuMicro M051
Before clock switching the related clock sources (current and new) must be turned on.
Register
CLKSEL1
Bits
[31:30]
[29:28]
Reserved
Reserved
31
23
15
7
PWM23_S
Offset
CLK_BA + 14 R/W
Descriptions
PWM23_S
PWM01_S
30
22
14
6
Reserved
R/W
PWM2 and PWM3 clock source select.
PWM2 and PWM3 uses the same Engine clock source, both of them use the same pre-
scalar
00 = Clock source from external external crystal clock (4 ~ 24MHz)
01 = Reserved
10 = Clock source from HCLK
11 = Clock source from internal 22.1184 MHz oscillator clock
PWM0 and PWM1 clock source select.
PWM0 and PWM1 uses the same Engine clock source, both of them use the same pre-
scalar
00 = Clock source from external external crystal clock ( 4 ~ 24MHz)
01 = Reserved
™
TMR3_S
TMR1_S
29
21
13
5
Series Technical Reference Manual
PWM01_S
Description
Clock Source Select Control Register 1
28
20
12
4
- 125 -
Reserved
Reserved
27
19
11
3
Reserved
Publication Release Date: Sept 14, 2010
ADC_S
26
18
10
2
TMR2_S
TMR0_S
25
17
9
1
UART_S
WDT_S
Revision V1.2
Reset Value
0xFFFF_FFFX
24
16
8
0