HT56R64 Ver la hoja de datos (PDF) - Holtek Semiconductor
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componentes Descripción
Lista de partido
HT56R64 Datasheet PDF : 90 Pages
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HT56R64
Pin Name
I/O
Configuration
Option
Description
SEG31~SEG24 O
¾
LCD driver outputs for LCD panel segments.
SEG23~SEG16 O
¾
A bit in the LCD Control Register determines if the pins are to be used as
segment drivers or as CMOS outputs.
SEG8~SEG9
O
SEG10/SDO
O
SEG11/SDI/SDA I/O
SEG12/SCK/SCL I/O
SEG13/SCS
I/O
SEG14/PCLK
O
SEG15/PINT
I/O
I2C
SPI
PCLK
PINT
SEG8 and SEG9 are LCD driver outputs.
SEG10 is pin-shared with the Serial Interface Output line, SDO.
SEG11 is pin-shared with the SPI Bus data line, SDI and the I2C Bus data
line SDA.
SEG12, is pin-shared with the SPI Bus clock line, SCK, and the I2C Bus
clock line SCL.
SEG13 is pin-shared with the Serial Interface Select line, SCS.
SEG14 is pin-shared with the Peripheral Clock line, PCLK.
SEG15 is pin-shared with the Peripheral Interrupt line, PINT.
All of the SEG8~SEG15 lines can be chosen to be either segment drivers
or as logical outputs using LCD control bits.
SEG0~SEG7
O
LCD driver outputs for LCD panel segments.
¾
SEG0~SEG7 can be chosen to be either segment drivers or as logical
outputs using LCD control bits.
OSC1
OSC2
OSC1, OSC2 are connected to an external RC network or external crys-
I
O
Crystal or RC
or EC
tal, determined by configuration option, for the internal system clock. If the
RC system clock option is selected, pin OSC2 can be used to measure the
system clock at 1/4 frequency. EC is external clock mode, we can input
clock source directly to OSC1 pin.
OSC3
OSC4
I
O
RTC
OSC3 and OSC4 are connected to a 32768Hz crystal oscillator to form a
real time clock for fSUB or fSL.
RES
I
¾
Schmitt Trigger reset input. Active low.
VLCD1
¾
¾
LCD power supply
VREF
I
¾
Reference voltage input pin.
VMAX
I
¾
IC maximum voltage, connect to VDD, VLCD or V1
V1, VLCD2, C1,
C2
I
¾
LCD voltage pump
VDD
¾
¾
Positive power supply
AVDD
¾
¾
Analog positive power supply.
VSS
¾
¾
Negative power supply, ground
AVSS
¾
¾
Analog negative power supply, ground
Note: The Pin Description table represents the largest package available, therefore some of the pins and functions
may not be available on smaller package types.
Absolute Maximum Ratings
Supply Voltage ...........................VSS-0.3V to VSS+6.0V
Input Voltage..............................VSS-0.3V to VDD+0.3V
IOL Total ..............................................................150mA
Total Power Dissipation .....................................500mW
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
IOH Total............................................................-100mA
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 reliability.
Rev. 1.40
4
September 8, 2009
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