HT46R62 Holtek Semiconductor Inc., HT46R62 Datasheet - Page 4

• Manufacturer Part Number: HT46R62
• Description: Ht46r62/ht46c62 -- A/d With Lcd Type 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

Pin Description
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Rev. 1.70
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PD0/PWM0
PD1/PWM1
PD2/PWM2
PD4/INT0
PD5/INT1
PD6/TMR
VSS
VLCD
VMAX
V1, V2, C1, C2
COM0~COM2
COM3/SEG19
SEG0~SEG18
OSC1
OSC2
OSC3
OSC4
VDD
RES
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 reliabil-
ity.
I/O
I/O
I/O
I/O
I/O
O
O
O
O
I
I
I
I
I
I
Logical Output
1/2, 1/3 or 1/4
System Clock
Crystal or RC
Wake-up
Options
Pull-high
Pull-high
Pull-high
Pull-high
Buzzer
RTC or
PWM
Duty
PFD
SS
SS
0.3V to V
0.3V to V
Bidirectional 8-bit input/output port. Each bit can be configured as wake-up
input by option. Software instructions determine the CMOS output or
Schmitt Trigger input with or without pull-high resistor (determined by
pull-high options: bit option). The BZ, BZ and PFD are pin-shared with
PA0, PA1 and PA3, respectively.
Bidirectional 6-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (de-
termined by pull-high option: bit option) or A/D input. Once a PB line is se-
lected as an A/D input (by using software control), the I/O function and
pull-high resistor are disabled automatically.
Bidirectional 3-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without a pull-high resistor (de-
termined by pull-high option: bit option). The PWM0/PWM1/PWM2 output
function are pin-shared with PD0/PD1/PD2 (dependent on PWM options).
Bidirectional 3-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without a pull-high resistor (de-
termined by pull-high option: bit option). The INT0, INT1 and TMR are
pin-shared with PD4/PD5/PD6.
Negative power supply, ground
LCD power supply
IC maximum voltage connect to VDD, VLCD or V1
Voltage pump
SEG19 can be set as a segment or as a common output driver for LCD
panel by options. COM0~COM2 are outputs for LCD panel plate.
LCD driver outputs for LCD panel segments. SEG0~SEG15 can be
optioned as logical outputs.
OSC1 and OSC2 are connected to an RC network or a crystal (by options)
for the internal system clock. In the case of RC operation, OSC2 is the out-
put terminal for 1/4 system clock. The system clock may come from the
RTC oscillator. If the system clock comes from RTCOSC, these two pins
can be floating.
Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz
crystal oscillator for timing purposes or to a system clock source (depend-
ing on the options). No built-in capacitor
Positive power supply
Schmitt trigger reset input, active low
DD
SS
+6.0V
+0.3V
4
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
Description
HT46R62/HT46C62
February 14, 2006