HT45R34 Holtek Semiconductor, HT45R34 Datasheet - Page 3

• Manufacturer Part Number: HT45R34
• Description: C/R to F Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

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Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Pin Description
Note: *All pull-high resistors are controlled by an option bit.
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
I
Total Power Dissipation .....................................500mW
D.C. Characteristics
Rev. 1.20
OL
PA0/INT0
PA1/INT1
PA2/TMR
PA3~PA7
RC1~RC12
RCOUT
IN
RREF
CREF
RES
VSS
VDD
OSC1
OSC2
V
I
I
I
Symbol
DD1
DD2
STB1
Pin Name
DD
Total ..............................................................300mA
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.
Operating Voltage
Operating Current
(Crystal OSC, RC OSC)
Operating Current
(Crystal OSC, RC OSC)
Standby Current (WDT Enabled)
I/O
I/O
O
O
O
I
I
I
I
I
Crystal or RC
Pull-high*
Wake-up
Options
Parameter
SS
SS
Bidirectional 8-bit I/O port. Each pin can be configured as a wake-up input via con-
figuration options. Software instructions determine if the pin is a CMOS output or
Schmitt trigger input. Pull-high resistors can be added to the each pin via a configu-
ration option.
Pins PA0 and PA1 are pin-shared with external interrupt input pins INT0 and INT1,
respectively. Configuration options determine the interrupt enable/disable and the
interrupt low/high trigger type. Pins PA2 is pin-shared with the external timer input
pins TMR.
Capacitor or resistor connection pins
Capacitor or resistor connection pin to RC OSC
Oscillation input pin
Reference resistor connection pin
Reference capacitor connection pin
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 configu-
ration 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.
0.3V to V
0.3V to V
DD
SS
+6.0V
+0.3V
V
3V
5V
5V No load, f
3V
5V
DD
f
f
No load, f
No load, system HALT
Test Conditions
SYS
SYS
3
=4MHz
=8MHz
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
I
OH
Conditions
Total............................................................ 200mA
SYS
SYS
Description
=4MHz
=8MHz
Min.
2.2
3.3
Typ.
1
3
4
October 15, 2007
Max.
5.5
5.5
10
HT45R34
2
5
8
5
Ta=25 C
Unit
mA
mA
mA
V
V
A
A