Datasheet BP45F4NB, BP45FH4NB (Holtek) - 67

BP45F4NB/BP45FH4NB BP45F4NB/BP45FH4NB Power Bank Flash MCU Power Bank Flash MCU
01010101B. Note that the LVR function will be automatically disabled when the devices enter the IDLE or SLEEP mode. LVR tRSTD + tSST Internal Reset
Low Voltage Reset Timing Chart • LVRC Register Bit 7 6 5 4 3 2 1 0
Name LVS7 LVS6 LVS5 LVS4 LVS3 LVS2 LVS1 LVS0 R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 1 0 1 0 1 0 1 Bit 7~0
LVS7~LVS0
: LVR voltage select control 01010101: 2.55V 00110011: 2.55V 10011001: 2.55V 10101010: 2.55V Any other value: MCU reset – register is reset to POR value When an actual low voltage condition occurs, as specified above, an MCU reset will be generated. The reset operation will be activated after the low voltage condition keeps more than a tLVR time. In this situation the register contents will remain the same after such a reset occurs. Any register value, other than the four defined register values above, will also result in the generation of an MCU reset. The reset operation will be activated after a delay time, tSRESET. However in this situation the register contents will be reset to the POR value.
• RSTFC Register Bit 7 6 5 4 3 2 1 0
Name — — — — — LVRF LRF WRF R/W — — — — — R/W R/W R/W POR — — — — — x 0 0 “x”: Unknown Bit 7~3 Unimplemented, read as “0” Bit 2
LVRF
: LVR function reset flag 0: Not occurred 1: Occurred This bit is set high when a specific low voltage reset situation condition occurs. This bit can only be cleared to zero by the application program. Bit 1
LRF
: LVR control register software reset flag 0: Not occurred 1: Occurred This bit is set high if the LVRC register contains any non-defined LVRC register values. This in effect acts like a software-reset function. This bit can only be cleared to zero by the application program. Bit 0
WRF
: WDT control register software reset flag Refer to the Watchdog Timer Control Register section. Rev. 1.00 66 December 07, 2020 Rev. 1.00 67 December 07, 2020 Document Outline Features CPU Features Peripheral Features General Description Selection Table Block Diagram Pin Assignment Pin Description Level Shift Input/Output Relationship and Reset Condition Absolute Maximum Ratings D.C. Characteristics Operating Voltage Characteristics Operating Current Characteristics Standby Current Characteristics A.C. Characteristics High Speed Internal Oscillator – HIRC – Frequency Accuracy Low Speed Internal Oscillator Characteristics – LIRC Operating Frequency Characteristic Curves System Start Up Time Characteristics Input/Output Characteristics Input/Output (without Multi-power) D.C Characteristics Input/Output (with Multi-power) D.C Characteristics Memory Characteristics LVR/LVD Electrical Characteristics A/D Converter Electrical Characteristics Over/Under Voltage Protection Electrical Characteristics Over Current Protection Electrical Characteristics USB Auto Detection Electrical Characteristics LDO Regulator Electrical Characteristics Level Converter Electrical Characteristics Power-on Reset Characteristics System Architecture Clocking and Pipelining Program Counter Stack Arithmetic and Logic Unit – ALU Flash Program Memory Structure Special Vectors Look-up Table Table Program Example In Circuit Programming – ICP On-Chip Debug Support – OCDS In Application Programming – IAP Data Memory Structure Data Memory Addressing General Purpose Data Memory Special Purpose Data Memory Special Function Register Description Indirect Addressing Registers – IAR0, IAR1, IAR2 Memory Pointers – MP0, MP1L/MP1H, MP2L/MP2H Accumulator – ACC Program Counter Low Byte Register – PCL Look-up Table Registers – TBLP, TBHP, TBLH Option Memory Mapping Register – ORMC Status Register – STATUS Oscillators Oscillator Overview System Clock Configurations Internal High Speed RC Oscillator – HIRC Internal 32kHz Oscillator – LIRC Operating Modes and System Clocks System Clocks System Operation Modes Control Registers Operating Mode Switching Standby Current Considerations Wake-up Watchdog Timer Watchdog Timer Clock Source Watchdog Timer Control Register Watchdog Timer Operation Reset and Initialisation Reset Functions Reset Initial Conditions Input/Output Ports Pull-high Resistors Port A Wake-up I/O Port Control Registers I/O Port Power Source Control I/O Port Source Current Control Pin-shared Functions I/O Pin Structure Programming Considerations Timer Modules – TM Introduction TM Operation TM Clock Source TM Interrupts TM External Pins Programming Considerations Compact Type TM – CTM Compact Type TM Operation Compact Type TM Register Description Compact Type TM Operating Modes Periodic Type TM – PTM Periodic Type TM Operation Periodic Type TM Register Description Periodic Type TM Operation Modes Complementary PWM Output with Dead Time Dead Time Insertion Complementary PWM Registers Analog to Digital Converter A/D Converter Overview A/D Converter Register Description A/D Converter Reference Voltage A/D Converter Input Signals A/D Converter Operation Conversion Rate and Timing Diagram Summary of A/D Conversion Steps Programming Considerations A/D Conversion Function A/D Conversion Programming Examples Universal Serial Interface Module – USIM SPI Interface I2C Interface UART Interface Over Current Protection Over Current Protection Operation Over Current Protection Registers Input Voltage Range OCP OPA and Comparator Offset Calibration Over/Under Voltage Protection OUVP Circuit Operation OUVP Register Description OVP and UVP Comparator Offset calibration USB Auto Detection D1+/D1- and D2+/D2- for Auto Detection USB Auto Detection Registers Interrupts Interrupt Registers Interrupt Operation External Interrupts A/D Converter Interrupt Over Current Protection Interrupt Over Voltage Protection Interrupt Under Voltage Protection Interrupts Multi-function Interrupts Timer Module Interrupts USIM Interrupt Time Base Interrupts LVD Interrupt Interrupt Wake-up Function Programming Considerations Low Voltage Detector – LVD LVD Register LVD Operation Application Circuits Instruction Set Introduction Instruction Timing Moving and Transferring Data Arithmetic Operations Logical and Rotate Operation Branches and Control Transfer Bit Operations Table Read Operations Other Operations Instruction Set Summary Table Conventions Extended Instruction Set Instruction Definition Extended Instruction Definition Package Information 24-pin SSOP (150mil) Outline Dimensions 28-pin SSOP (150mil) Outline Dimensions SAW Type 28-pin QFN (4mm×4mm) Outline Dimensions