BS86B12A-3 Datasheet, PDF (8/195 Pages) Holtek Semiconductor Inc – Touch A/D Flash MCU with LED/LCD Driver

BS86B12A-3/BS86C16A-3/BS86D20A-3
Touch A/D Flash MCU with LED/LCD Driver
General Description
These devices are a series of Flash Memory type 8-bit high performance RISC architecture
microcontrollers with fully integrated touch key functions. With all touch key functions provided
internally and with the convenience of Flash Memory multi-programming features, these devices
have all the features to offer designers a reliable and easy means of implementing touch switches
within their product applications.
The touch key functions are fully integrated thus completely eliminating the need for external
components. In addition to the Flash Program Memory, other memory includes an area of RAM
Data Memory as well as an area of true EEPROM Memory forstorage of non-volatile data such as
serial numbers, calibration data etc. Analog feature includes a multi-channel 12-bit A/D converter.
Protective features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage
Detector functions coupled with excellent noise immunity and ESD protection ensure that reliable
operation is maintained in hostile electrical environments.
A full choice of internal, external high and low speed oscillators are provided including a fully
integrated system oscillator which require no external components for its implementation. The
ability to operate and switch dynamically between a range of operating modes using different
clock sources gives users the ability to optimise microcontroller operation and minimise power
consumption. Easy communication with the outside world is provided using the fully integrated SPI
or I2C interface functions, while the inclusion of flexible I/O programming features, Timer Modules
and many other features further enhance device functionality and flexibility.
A UART module is contained within these devices. This interface can support applications such
as data communication networks between microcontrollers, low-cost data links between PCs and
peripheral devices, portable and battery operated device communication, etc.
These touch key devices will find excellent use in a huge range of modern Touch Key product
applications such as instrumentation, household appliances, electronically controlled tools to name
but a few.
Selection Table
Most features are common to these devices, the main features distinguishing them are Memory
capacity, I/O count, LCD driver segment count, Touch Key count, stack capacity amd package types.
The following table summarises the main features of each device.
Part No.
VDD
Program
Data
Data
Memory Memory EEPROM
I/O
Ext.
Int.
A/D
BS86B12A-3 2.7V~5.5V 2K×16
384×8
64×8
22
1
12-bit×8
BS86C16A-3 2.7V~5.5V 4K×16
512×8
64×8
26
1
12-bit×8
BS86D20A-3 2.7V~5.5V 8K×16
768×8
64×8
26
1
12-bit×8
Part No.
BS86B12A-3
BS86C16A-3
BS86D20A-3
LCD
Driver
Timer Module
16×4
10-bit CTM×1
10-bit PTM×2
20×4
10-bit CTM×1
10-bit PTM×2
20×4
10-bit CTM×1
10-bit PTM×2
Touch
Key
12
16
20
Interface
(SPI/I²C)
UART
Time
Base
√
√
2
√
√
2
√
√
2
Stack Package
6 20/24SOP
6 24/28SOP
8 24/28SOP
Rev. 1.40
8
December 05, 2016