CH559_DS.pdf

CH559 datasheet. Dual low/full-speed USB host/device +ADC 8-bit E8051 MCU. 64KB Flash-ROM, 6KB on-chip xRAM. Supports USB host and USB device modes. Provides dual port Root-HUB, ADC, 4 timers/PWM, 2 UARTs, 2 SPIs, etc.

Adobe Portable Document Format - 887.51 kB - 02/22/2026 at 09:28

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CH558_DS.PDF

CH558 datasheet, low/full-speed USB device + ADC 8-bit E8051 MCU, 40K program ROM, 4K+256 memory RAM, supports full-speed or low-speed USB devices, provides ADC, 4 groups of timers and PWM, dual serial ports, SPI, etc.

Adobe Portable Document Format - 762.22 kB - 02/22/2026 at 09:28

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CH552_DS.pdf

CH551/CH552 datasheet. CH551/CH552 is a low-speed/full-speed USB device and low-cost 8-bit E8051 MCU, with 16K flash+1K RAM 6-channel touch-key detection, ADC, two UARTs, unique ID, etc. CH551/CH552 supports ISP library.

Adobe Portable Document Format - 769.17 kB - 02/22/2026 at 09:24

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CH554_DS.PDF

CH554 datasheet. CH554 is an 8-bit E8051 MCU and supports low-speed USB host/slave and full-speed USB host/slave, with feature of low cost. It provides 16K program ROM and 1K+256 RAM, supports USB host and USB device, ADC, Touch-key, 3 sets of timers, PWM, 2 UARTs and SPI, etc.

Adobe Portable Document Format - 827.56 kB - 02/22/2026 at 09:24

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ideabook.zip

BASIC-52 program listing
The Microcontroller Idea Book
Circuits, Programs, & Applications
featuring the 8052-BASIC Microcontroller
by Jan Axelson

Zip Archive - 21.52 kB - 03/26/2024 at 15:45

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microcontroller_idea_book.pdf

The Microcontroller Idea Book
Circuits, Programs, & Applications
featuring the 8052-BASIC Microcontroller
by Jan Axelson

Adobe Portable Document Format - 1.32 MB - 03/26/2024 at 15:44

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270010-003_MCS_BASIC-52_Users_Manual_Nov1986.pdf

MCS BASIC-52 Users Manual
270010-003 Nov 1986

Adobe Portable Document Format - 16.33 MB - 03/26/2024 at 15:29

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MCS_BASIC52.pdf

MCS BASIC-52 ORERATING AND REFERENCE MANUAL
V1.0 & V1.1 INTEL CORPORATION 1986

Adobe Portable Document Format - 776.74 kB - 03/26/2024 at 15:20

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Intel_80C52_DS.pdf

Intel 80C52 datasheet
87C52/80C52/80C32
Preliminary

Adobe Portable Document Format - 250.38 kB - 03/26/2024 at 15:16

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HC-05 Datasheet_AT_Commands.pdf

HC-05 Datasheet and basic AT commands

Adobe Portable Document Format - 840.61 kB - 03/26/2024 at 14:23

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