HT68F14 HOLTEK [Holtek Semiconductor Inc], HT68F14 Datasheet - Page 15

• Manufacturer Part Number: HT68F14
• Description: Enhanced I/O Flash Type MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

HT68F13/HT68F14/HT68F15
Enhanced I/O Flash Type MCU
Note:
Power-on Reset Characteristics
Rev. 1.10
V
RR
t
f
f
t
t
t
t
t
t
t
Symbol
Symbol
POR
LIRC
TIMER
RES
INT
LVR
LVD
LVDS
BGS
SST
V
POR
D D
VDD
1. t
2. * For f
3. To maintain the accuracy of the internal HIRC oscillator frequency, a 0.1mF decoupling capacitor should be
connected between VDD and VSS and located as close to the device as possible.
SYS
VDD Start Voltage to Ensure
Power-on Reset
VDD Raising Rate to Ensure
Power-on Reset
Minimum Time for VDD Stays at
V
System Clock (LIRC)
Timer Input Pin Frequency
External Reset Low Pulse Width
Interrupt Pulse Width
Low Voltage Width to Reset
Low Voltage Width to Interrupt
LVDO stable time
VBG Turn on Stable Time
System Start-up Timer Period
(Wake-up from HALT)
POR
=1/f
ERC
to Ensure Power-on Reset
SYS
, as the resistor tolerance will influence the frequency a precision resistor is recommended.
Parameter
Parameter
t
P O R
R R
V D D
V
P O R
2.2V~
5.5V
V
5V
V
¾
¾
¾
¾
¾
¾
¾
¾
DD
¾
¾
¾
DD
T i m e
Test Conditions
Ta=-40°C~+85°C
f
f
f
SYS
SYS
SYS
Test Conditions
15
=HXT
=ERC or HIRC
=LIRC OSC
Conditions
Conditions
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
-10%
-50%
Min.
120
200
¾
20
15
¾
¾
¾
1
1
0.035
Min.
¾
1
15~16
1024
Typ.
240
1~2
32
32
45
¾
¾
¾
¾
¾
Typ.
¾
¾
¾
February 9, 2011
+10%
+60%
Max.
480
Max.
90
¾
¾
¾
¾
¾
¾
¾
100
1
¾
¾
Ta=25°C
Unit
V/ms
kHz
kHz
f
t
t
Unit
SYS
SYS
SYS
mV
ms
ms
ms
ms
ms
ms