HT46R65_11 Datasheet, PDF (4/46 Pages) Holtek Semiconductor Inc – A/D with LCD Type 8-Bit MCU

HT46R65/HT46C65
Pin Description
Pin Name I/O Options
Description
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
I/O
Wake-up
Pull-high
Buzzer
PFD
Bidirectional 8-bit input/output port. Each bit can be configured as wake-up in-
put by ROM code 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.
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB4/AN4
PB5/AN5
PB6/AN6
PB7/AN7
Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without pull-high resistor (deter-
I/O Pull-high mined by pull-high option: bit option) or A/D input. Once a PB line is selected
as an A/D input (by using software control), the I/O function and pull-high re-
sistor are disabled automatically.
PD0/PWM0
PD1/PWM1
PD2/PWM2
I/O
PD3/PWM3
Pull-high
PWM
Bidirectional 4-bit input/output port. Software instructions determine the
CMOS output, Schmitt trigger input with or without a pull-high resistor (deter-
mined by pull-high option: bit option). The PWM0/PWM1/PWM2/PWM3 out-
put function are pin-shared with PD0/PD1/PD2/PD3 (dependent on PWM
options).
PD4/INT0
Bidirectional 4-bit input/output port. Software instructions determine the
PD5/INT1
PD6/TMR0
I/O
Pull-high
CMOS output, Schmitt trigger input with or without a pull-high resistor (deter-
mined by pull-high option: bit option). The INT0, INT1, TMR0 and TMR1 are
PD7/TMR1
pin-shared with PD4/PD5/PD6/PD7.
VSS
¾
¾
Negative power supply, ground
VLCD
I
¾
LCD power supply
VMAX
I
¾
IC maximum voltage connect to VDD, VLCD or V1
V1, V2, C1, C2 I
¾
Voltage pump
COM0~COM2
COM3/SEG40
O
1/3 or 1/4 Duty
SEG40 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.
SEG0~SEG39
O
Logical Output
LCD driver outputs for LCD panel segments. SEG0~SEG23 can be optioned
as logical outputs.
OSC1
OSC2
OSC1 and OSC2 are connected to an RC network or a crystal (by options) for
I
O
Crystal or RC
the internal system clock. In the case of RC operation, OSC2 is the output ter-
minal for 1/4 system clock. The system clock may come from the RTC oscilla-
tor. If the system clock comes from RTCOSC, these two pins can be floating.
OSC3
OSC4
I
O
RTC or
System Clock
Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz
crystal oscillator for timing purposes or to a system clock source (depending
on the options). No built-in capacitor
VDD
¾
¾
Positive power supply
RES
I
¾
Schmitt trigger reset input, active low
Absolute Maximum Ratings
Supply Voltage ...........................V_SS-0.3V to V_SS+6.0V
Input Voltage..............................V_SS-0.3V to V_DD+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
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.
Rev. 2.00
4
April 13, 2011