M052LAN Nuvoton Technology Corporation of America, M052LAN Datasheet - Page 44

• 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: -

[5]
[4]
[3]
[2:1]
[0]
NuMicro M051
BOD_LPM
BOD_INTF
BOD_RSTEN
BOD_VL
BOD_EN
Brown Out Detector Low power Mode (write-protected bit)
1= Enable the BOD low power mode
0= BOD operate in normal mode (default)
The BOD consumes about 100uA in normal mode, the low power mode can reduce the
current to about 1/10 but slow the BOD response.
Brown Out Detector Interrupt Flag
1= When Brown Out Detector detects the V
setting or the V
and the brown out interrupt is requested if brown out interrupt is enabled.
0= Brown Out Detector does not detect any voltage draft at V
through the voltage of BOD_VL setting.
Brown Out Reset Enable (initiated & write-protected bit)
1= Enable the Brown Out “RESET” function, when the Brown Out Detector function is
enable and the detected voltage is lower than the threshold then assert a signal to reset
the chip
The default value is set by flash controller user configuration register config0 bit[20]
0= Enable the Brown Out “INTERRUPT” function, when the Brown Out Detector function
is enable and the detected voltage is lower than the threshold then assert a signal to
interrupt the MCU Cortex-M0
When the BOD_EN is enabled and the interrupt is assert, the interrupt will keep till to the
BOD_EN set to “0”. The interrupt for CPU can be blocked by disable the NVIC in CPU
for BOD interrupt or disable the interrupt source by disable the BOD_EN and then re-
enable the BOD_EN function if the BOD function is required
Brown Out Detector Threshold Voltage Selection (initiated & write-protected bit)
The default value is set by flash controller user configuration register config0 bit[22:21]
Brown Out Detector Enable (initiated & write-protected bit)
The default value is set by flash controller user configuration register config0 bit[23]
1= Brown Out Detector function is enabled
0= Brown Out Detector function is disabled
BOV_VL[1]
1
1
0
0
™
Series Technical Reference Manual
DD
is raised up through the voltage of BOD_VL setting, this bit is set to “1”
- 44 -
BOV_VL[0]
1
0
1
0
Publication Release Date: Sep 14, 2010
DD
is dropped through the voltage of BOD_VL
Brown out voltage
4.5V
3.8V
2.7V
2.2V
DD
down through or up
Revision V1.2