HT45R35V Holtek Semiconductor Inc., HT45R35V Datasheet - Page 4

• Manufacturer Part Number: HT45R35V
• Description: C/r To F Type 8-bit Otp Mcu
• Manufacturer: Holtek Semiconductor Inc.

Note:
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
VCC Supply Voltage.....................................12V to 24V
I
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
D.C. Characteristics
Rev. 1.00
OH
V
I
I
I
I
V
BZO
BZO
VO
VCC
VFD0~VFD23
RES
VSS
VDD
OSC1
OSC2
Symbol
DD1
DD2
STB1
STB2
DD
IL1
Total ............................................................ 100mA
Pin Name
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
1. *All pull-high resistors are controlled by an option bit.
2. Pin PB3~PB7 are five internal pins only and not bound out and its port control register must setup this pin
3. PB3~PB7 individual pins can be selected to have a pull-high resistor.
as an output.
Operating Voltage
Operating Current
(Crystal OSC, RC OSC)
Operating Current
(Crystal OSC, RC OSC)
Standby Current
(WDT Enabled)
Standby Current
(WDT Disabled)
Input Low Voltage for I/O Ports,
TMR, INT0 and INT1
I/O
O
O
O
Parameter
I
I
Crystal or RC
Options
SS
SS
0.3V to V
0.3V to V
High voltage buzzer complement output signals
LDO regulator output
High voltage positive power supply for driving the VFD filament, F1O,
BZO and BZO outputs. An external 10uF capacitor is recommended to be
connected to ground on the PCB to reduce surge voltages.
High voltage grid/segment output for VFD panel
Schmitt trigger reset input. Active low
Negative power supply, ground
Positive power supply
OSC1, OSC2 are connected to an RC network or Crystal determined by a
configuration option, for the internal system clock. In the case of the RC
oscillator, OSC2 can be used to monitor the system clock. Its frequency is
1/4 system clock.
V
3V
5V
5V
3V
5V
3V
5V
DD
DD
SS
+6.0V
+0.3V
V
CC
Test Conditions
f
f
No load, f
No load, f
No load, system HALT
No load, system HALT
SYS
SYS
4
=4MHz
=8MHz
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
I
Total Power Dissipation .....................................500mW
OL
Conditions
Total ..............................................................150mA
SYS
SYS
=4MHz
=8MHz
Description
Min.
2.2
3.3
0
Typ.
1
3
4
January 15, 2009
HT45R35V
0.3V
Max.
5.5
5.5
10
2
5
8
5
1
2
DD
Ta=25 C
Unit
mA
mA
mA
V
V
V
A
A
A
A