Target Spec  TonTouchTM

                                                                                   Product：TTP252

一、General Description:

TTP252 MCU is an easy-used 4-bit CPU base microcontroller. It contains 1984-word ROM、96-nibble RAM、timer/Counter、timer/PWM、interrupt service 、IO control hardware、LVR、touch pad and LDO feature for specified applications. The device is also suitable for diverse simple applications in control appliance and consumer product.

 

二、 Features:

Tontek RISC 4-bit CPU core

Total 26 crucial instructions and two addressing mode

Most instructions need 1 word and 1 machine cycle(2 system clocks) except read table instruction(RTB)

advance CMOS process

Working memory with 1984*16 program ROM and 96*4 SRAM

2-level stacks

Operating voltage: 2.0V~5.5V

System operating frequency: (at VDD=5V )

. High speed system oscillator (OSCH):

 Built-in RC oscillator: 4MHz(typical)

.Low speed peripheral oscillator (OSCL):

 Built-in RC oscillator: 16KHz(typical)

Offer 8 IO+8 touch pad or 16 general programmable I/O

O port built-in key wake-up feature enable by software setting

 Providing external interrupt inputs and Timer clock inputs

 Offering internal signal outputs, like buzzer(PFD)

One 8-bit auto-reload timer/counter & one 8-bit timer/PWM & one time

base counter

4 timer clock sources(internal & external) selected by software

 Timer provides the PFD feature for Buzzer output driver

 Time base offers 2 various period interrupt request

MCU system protection and power saving controlled mode:

Built-in watch dog timer (WDT) circuit

ROM code error detection

Out of user program’s range detection

 Providing high/low system operating speed、sleep、stop mode

for power saving control

 Built-in low voltage reset (LVR) function

8 pins with touch pad detection

LDO voltage can select 2.7V or 4.2V output by option.

LVR voltage can select 2.2V or 3.0V by option.

Provides 8 interrupt sources

External: INT0 , INT1 shared with IO pad

Internal: Timer/counter, Timer/PWM, two Time base timer

Two touchpad’s interrupt

. Provide package types

DIP/SOP 8 pins, DIP/SOP/SSOP/QFN 16/20/24 pins, TSSOP

20pins

 Dice available

三、Applications:

Household electric appliances

Consumer products

Measurement controller

四、Pin Description:

 If PC3 select INT0 option, and PA0’s INT0 will be disable. If PC3’s option don’t 
select INT0 , and PA0 have INT0 function. 
If PD0 select INT1 option, and PC2’s INT1 will be disable. If PD0’s option don’t 
select INT1 , and PC2 have INT1 function.  If PC3 or PD0 select PFD1,
 it will disable PA2’s PFD1 function. PC3’s PFD1 
function and PD0’s PFD1 function can be enable in same time. 
 If PC3 or PD0 select PWM/PFD2, it will disable PA3’s PWM/PFD2 function. 
PC3’s PWM/PFD2 function and PD0’s PWM/PFD2 function can be enable at 
sametime

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