As a leader in chip programming, ACROVIEW Technology has announced a significant expansion of its compatible chip models alongside the release of its new programming software version. The company's core product, the universal programming platform AP8000, has now achieved full adaptation with ChipSea's 8-bit Flash microcontroller CSU34F20-QFN20.

The CSU34F20-QFN20 is an 8-bit CMOS single-chip Flash MCU with LED driver and 12-bit ADC, featuring a built-in 4K×16-bit FLASH program memory.

Application Scope
Personal care appliances, electronic cigarettes.

Key Features

• High-Performance RISC CPU

• 8-bit MCU

• Built-in 4K×16-bit FLASH program memory

• 488-byte data memory (SRAM)

• 43 single-word instructions

• 8-level PC storage stack

• 8-level PUSH and POP stack

• Supports In-Circuit Debugging (ICD)

• Oscillator

• Built-in 32MHz oscillator with accuracy of ±1%@5V, 25°C

• Peripheral Features

• Detection voltages: 1.9V, 2.2V, 3.2V, 3.7V

• Comparator function, external input compared with internal 0.6V

• Reset voltages: 1.7V, 2.0V, 2.5V

• 1.22V internal reference, accuracy ±1% (5V)

• Supports voltage reference output, load 10KΩ/100pF

• 8 external input channels, supporting differential/single-ended input

• Internal 1.22V or VDD voltage reference selectable

• 8COM×7SEG LED drive, adjustable duty cycle

• SEG drive current 8/10/12/14mA, accuracy ±5%

• COM sink current 70mA/40mA

• 8 internal interrupts

• 2 external interrupts—INT0, INT1

• 19 bidirectional I/O pins

• 3 PWM outputs, 1 complementary PWM output

• 10 interrupt sources

• 14 input pins with wake-up function

• LED Driver

• 12-bit ADC

• Internal Voltage Reference

• Low-Voltage Reset (LVR) function

• Low-Voltage Detection (LVD) function

• POR (Power-On Reset) voltage 1.8V

• PT1.3 supports open-drain output

• PT1.5 and PT1.4 output current configurable, max IOL=60mA@5V, IOH=25mA@5V

• Input logic level voltage configurable

• 1 UART, baud rate up to 115200

• 1 I2C Slave, supporting Standard mode (100kbps) and Fast mode (400kbps)

• Dedicated Microcontroller Features

• 7-bit down counter, cannot be disabled by software once enabled

• Programmable time range

• 12-bit programmable prescaler timer/counter

• 12-bit programmable prescaler timer/counter

• 12-bit programmable prescaler timer/counter

• 8-bit programmable prescaler timer/counter

• Power-On Reset (POR)

• Power-On Reset and Hardware Reset delay timer (30ms)

• Built-in Low-Voltage Reset (LVR)

• Timer 0

• Timer/Counter 2

• Timer/Counter 3

• Timer/Counter 4

• Extended Watchdog Timer (32K WDT)

• Window Watchdog (CPU clock)

• CMOS Technology

• -40 to 85°C

• 2.3V~5.5V @ fcpu=4MHz (instruction cycle)

• 1.8V~2.4V @ fcpu=2MHz (instruction cycle)

• Operating Voltage Range

• Operating Temperature Range

• Low-Power Characteristics

• Normal mode 3.5mA @4MHz, 5V

• Sleep mode 3μA

• MCU Operating Current

• Package

• QFN20/SSOP24/SOP16

Functional Block Diagram

ACROVIEW's independently developed AP8000 universal programmer has become a benchmark professional programming solution in the industry. Supporting flexible and configurable 1:1 and 1:8 modes, and offering both online and offline operation modes, it has specifically developed dedicated programming solutions for memory chips like eMMC and UFS. It can comprehensively meet the bare chip offline programming and on-board programming needs for the entire ChipSea product series. The AP8000 adopts an innovative modular design consisting of three core modules: the host, the baseboard, and the adapter socket, granting the device excellent compatibility and expandability. As a universal programming platform, it not only adapts to various programmable chips on the market but also, with its stable and efficient performance, serves as the core component of ACROVIEW's automated mass programming device, the IPS5800S. This enables efficient handling of large-scale chip programming tasks, meeting high-volume production demands.

The AP8000 host features flexible connectivity options with both USB and NET interfaces, allowing for convenient networking of multiple programmers. Through the networking function, users can easily achieve synchronous control of multiple programmers, efficiently conducting parallel programming operations. Regarding safety, the host has a built-in intelligent protection circuit that monitors chip placement status and circuit connections in real-time. Upon detecting anomalies such as reversed chip insertion or short circuits, it immediately triggers a power-off protection mechanism, providing comprehensive protection for both the chip and the programmer. The host is equipped with a high-speed FPGA chip, significantly improving data transmission and processing efficiency to ensure a smooth and fast programming process. To enhance user convenience, the host's rear panel features an SD card slot. Users simply need to store project files generated on the PC onto an SD card, insert it into the slot, and can then use the programmer's physical buttons to complete file selection, loading, and programming operations, enabling standalone operation independent of a PC. This design not only reduces dependency on specific computer hardware but also simplifies the workspace setup process, significantly improving operational flexibility.

In terms of expandability and compatibility, the AP8000 employs a modular combination design of baseboards and adapter boards, effectively extending the functional boundaries of the host. Currently, the device supports products from all major semiconductor manufacturers, covering renowned brands such as SK hynix, Micron, SANDISK, ASR, and Kingston. It supports a wide range of device types, including NAND, NOR, MCU, CPLD, FPGA, eMMC, etc., and is fully compatible with multiple industry-standard file formats like Intel Hex, Motorola S, Binary, and POF, providing users with a one-stop, full-scenario chip programming solution.

Company Introduction

• About ChipSea: ChipSea Technology (ChipSea) was founded in September 2003. It is a full-signal-chain integrated circuit design enterprise integrating sensing, computing, control, and connectivity. It focuses on the R&D and design of high-precision ADCs, high-reliability MCUs, measurement algorithms, and AIoT one-stop solutions. Its products and solutions are widely used in industrial measurement and control, communication and computing, lithium battery management, consumer electronics, automotive electronics, smart home, smart instrumentation, smart health, and other fields.

• About ACROVIEW: ACROVIEW is a National-level Specialized, Refined, Distinctive, and Innovative (SRDI) "Little Giant" enterprise engaged in the R&D, production, and sales of semiconductor chip test and programming equipment. The company is dedicated to empowering customers across the entire industry chain, including Fabless, IDM, OSAT, wafer Fabs, and end-device manufacturers, through innovative semiconductor test technologies and solutions. ACROVIEW's first-of-its-kind Auto Burn-In (ABI) system greatly enhances chip aging test efficiency and reduces per-DUT test costs for customers. Simultaneously, it provides customers with equipment products and solutions for various stages, from PSV, CP, FT, ABI, SLT, to programming. ACROVIEW perfectly integrates leading advantages in product technology, system-level expertise, and a globally distributed R&D and sales service network to create value for customers seeking a competitive edge in the market.