M052LAN Nuvoton Technology Corporation of America, M052LAN Datasheet - Page 131

• 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: -

PLL Control Register （PLLCON）
NuMicro M051
The PLL reference clock input is from the external crystal clock input
internal 22.1184 MHz oscillator. This register is used to control the PLL output frequency and PLL
operating mode
Register
PLLCON
Bits
[19]
[18]
[17]
31
23
15
7
OUT_DV
Offset
CLK_BA + 20 R/W
Descriptions
PLL_SRC
OE
BP
30
22
14
6
Reserved
R/W
PLL Source Clock Select
1 = PLL source clock from 22.1184 MHz oscillator
0 = PLL source clock from externa; crystal (4 ~ 24 MHz)
PLL OE (FOUT enable) pin Control
0 = PLL FOUT enable
1 = PLL FOUT is fixed low
PLL Bypass Control
0 = PLL is in normal mode (default)
1 = PLL clock output is same as clock input (XTALin)
™
29
21
13
5
Series Technical Reference Manual
Description
PLL Control Register
28
20
12
4
- 131 -
Reserved
FB_DV
PLL_SRC
IN_DV
27
19
11
3
Publication Release Date: Sept 14, 2010
OE
26
18
10
2
(4 ~ 24 MHz)
BP
25
17
9
1
Revision V1.2
0x0005_C22E
Reset Value
or from the
FB_DV
PD
24
16
8
0