TTP258
TonTouchTM
Preliminary
§ AC Characteristics:(Test condition at room temperature=25oC)
Parameter
External Reset
Interrupt input
Test Condition
Min.
Typ.
Max.
Unit
CPU
Low active pulse width tRES
2
2
-
-
-
-
clock
Low active pulse width tINT
Low active pulse width twkup, Application de-bounce
should be manipulated by user’ software
Wake up input
2
-
-
OSCL
Hz
System
Oscillator
Frequency
FOSCH (Built-in RC)
VDD=5.0V
VDD=5.0V
-
4M
-
Peripheral
Oscillator
Frequency
Built-in FOSCL(RC)
12K
16K
21K
Hz
Startup Period
of
T
OSCH (Built-in RC)
wake-up from off mode
Wake-up from off mode
8
8
8
-
-
-
-
-
-
FOSCH
FOSCL
FOSCH
Oscillators
TOSCL (Built-in RC)
OSCLÆOSCH
T
OSCH ( Built-in RC)
Stable Time
Of
& OSCH off
(If H/L=0 then OSCH stop)
OSCHÆOSCL
System Clock
Switching
TOSCL ( Built-in RC)
8
-
-
-
FOSCL
& OSCL on
Timer/Counter
input clock
frequency
Input frequency rating, no de-bounce circuit built-in
,at VDD=5V
DC
4M
Hz
System Stable
Time after
After power up, the system needs to initialize the
configured state and OST.
-
-
40
ms
Power up
16’/04/06
Page 8 of 44
Ver.: 1.2
TTELEC [ TT Electronics ]
