BS85B12-3_12 参数 Datasheet PDF下载

BS85B12-3/BS85C20-3/BS85C20-5

Touch Key Flash MCU with LCD/LED 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 and LCD/LED drivers. With all touch

key functions provided internally and with the convenience of Flash Memory multi-programming

features, this device range has all the features to offer designers a reliable and easy means of

implementing Touch Keys within their products applications. The touch key functions are fully

integrated completely eliminating the need for external components. The inclusion of both LCD

and LED driver functions allows for easy and cost effective solutions in applications that require to

interface to these display types.

In addition to the flash program memory, other memory includes an area of RAM Data Memory

as well as an area of EEPROM memory for storage of non-volatile data such as serial

numbers, calibration data etc. 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 choice of oscillator functions are provided including a fully integrated system oscillator which

requires 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 internal I2C and SPI interfaces, while the inclusion of

flexible I/O programming features, Timer Modules and many other features further enhance device

functionality and flexibility.

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

Part No.

Internal

Clock

8MHz

12MHz

16MHz

8MHz

12MHz

16MHz

8MHz

12MHz

16MHz

VDD

System Program

Data

Data

Oscillator Timer Touch LCD

LED SPI/

I/O

Stack

Clock Memory Memory EEPROM

Type

Module Key Driver Driver I

2

C

2K×15

256×8

64×8

22

HIRC

LIRC

2

12

4×14

6×8

1

4

Package

24/28SKDIP

/SOP

24/28SSOP

28SKDIP

/SOP

28SSOP

44QFP

28SKDIP

/SOP

28SSOP

44QFP

BS85B12-3

V

LVR

~ 8MHz ~

5.5V 16MHz

BS85C20-3

V

LVR

~ 8MHz ~

5.5V 16MHz

4K×15

384×8

128×8

38

HIRC

LIRC

3

20

4×22

8×14

1

8

BS85C20-5

V

LVR

~ 8MHz ~

5.5V 16MHz

4K×15

384×8

128×8

38

HIRC

LIRC

LXT

3

20

4×22

8×14

1

8

Rev. 1.20

8

½½½½st 10½ 2012