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HT56RB688 Fiches technique(PDF) 11 Page - Holtek Semiconductor Inc

No de pièce HT56RB688
Description  TinyPowerTM A/D Type Smart Card OTP MCU with LCD, DAC, ISO 7816 and USB Interfaces
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Fabricant  HOLTEK [Holtek Semiconductor Inc]
Site Internet  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56RB688 Fiches technique(HTML) 11 Page - Holtek Semiconductor Inc

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Pin Name
I/O
Configuration
Option
Description
PC0/OSC1
PC1/OSC2
PC2/OSC3
PC3/OSC4
PC4/PWM0/SCS0
PC5/PWM1/PCLK
PC6/PWM2/PINT
I/O
ERC or HIRC
or EC
32.768kHz
SIM0
VDDIO
Bidirectional 7-bit input/output port. Software instructions determine
if the pin is a CMOS output or Schmitt trigger input. A pull-high
resistor can be connected to each pin determined by the PCPU
register.
OSC1 and OSC2 are connected to an external RC network or
crystal, determined by configuration options, for the internal system
clock. If the RC system clock option is selected, the OSC2 pin can be
used as an I/O pin. The internal system can come from the internal
high speed RC oscillator (HIRC) selected by configuration options.
When the HIRC is selected as the system oscillator, the OSC1 and
OSC2 pins can be used as normal I/O pins. The abbreviation EC
stands for External Clock mode. In the EC mode, an external clock
source is provided on OSC1 as the system clock.
OSC3 and OSC4 are connected to a 32.768kHz crystal oscillator to
form a clock source for f
SUB or fSL.
PWM0, PWM1 and PWM2 are pin-shared with PC4, PC5 and PC6
respectively. PC4 is also pin-shared with SCS0, the chip select pin
for the Serial Interface Module 0. The power supply to PC4 can be
selected to come from VDD or VDDIO determined by a configuration
option.
The PCLK is a peripheral clock output pin which is enabled by the
²PCKEN² in the SIM0CTRL register and pin-shared with PC5.
The PINT is the external peripheral interrupt pin and pin-shared with
PC6.
PC7/RES
I/O
RES
Schmitt Trigger reset input pin, active low. The RES pin is pin-shared
with PC7 whose function is determined by a configuration option.
When PC7 is configured as an I/O pin, software instructions
determine if this pin is an open drain output or a Schmitt Trigger input
without pull-high resistor.
LCD
VLCD
P
¾
LCD power supply
COM15/SEG80
COM14/SEG81
COM13/SEG82
COM12/SEG83
COM11/SEG84
COM10/SEG85
COM9/SEG86
COM8/SEG87
O
¾
COM15~COM8 are LCD driver outputs for LCD panel commons
while SEG80~SEG87 are LCD driver outputs for LCD panel
segments. These pins can be configured as segments or common
LCD driver outputs by related LCD control bits.
COM7~COM0
O
¾
LCD driver outputs for LCD panel commons.
SEG79~SEG24
¾
LCD driver outputs for LCD panel segments.
SEG23~SEG16/
PF7~PF0
I/O
¾
LCD driver outputs for LCD panel segments.
SEG23~SEG16 can be set as segment outputs or logic I/O pins by
the LCD output control register LCDIO.
SEG15~SEG8/
PE7~PE0
I/O
¾
LCD driver outputs for LCD panel segments.
SEG15~SEG8 can be set as segment outputs or logic I/O pins by the
LCD output control register LCDIO.
SEG7~SEG0/
PD7~PD0
I/O
¾
LCD driver outputs for LCD panel segments.
SEG7~SEG0 can be set as segment outputs or logical I/O pins by
the LCD output control register LCDIO.
HT56RB688
TinyPowerTM A/D type Smart Card OTP MCU
with LCD, DAC, ISO 7816 and USB Interfaces
Rev. 1.10
11
April 15, 2013


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