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PDF HT56C678 Data sheet ( Hoja de datos )
| Número de pieza | HT56C678 | |
| Descripción | TinyPower A/D Type | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
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HT56R67/HT56R668/HT56C668
HT56R678/HT56C678/HT56R688
TinyPowerTM A/D Type with LCD 8-Bit MCU
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
fSYS=100kHz: 2.2V~5.5V
fSYS=4MHz: 2.2V~5.5V
fSYS=8MHz: 3.0V~5.5V
fSYS=12MHz: 4.5V~5.5V
· Operating current:
fSYS=1MHz at 3V, 170mA, typ.
· OTP Program Memory: 16K´16 ~ 48K´16
· RAM Data Memory: 2304´8
· 24 to 32 bidirectional I/O lines
· TinyPower technology for low power operation
· Three pin-shared external interrupts lines
· Multiple programmable Timer/Event Counters
with overflow interrupt and 7-stage prescaler
· External Crystal, RC and 32768 XTAL oscillators
· Fully integrated RC 32kHz oscillator
· Externally supplied system clock option
· Watchdog Timer function
· PFD/Buzzer for audio frequency generation
· Dual Serial Interfaces: SPI and I2C
· LCD and LED driver function
· 4 operating modes: normal, slow, idle and sleep
· 8-channel 12-bit resolution A/D converter
· 4-channel 12-bit PWM outputs
· Low voltage reset function: 2.1V, 3.15V, 4.2V
· Low voltage detect function: 2.2V, 3.3V, 4.4V
· Bit manipulation instruction
· Table read instructions
· 63 powerful instructions
· Up to 0.33ms instruction cycle with 12MHz system
clock at VDD=5V
· Multiple level subroutine nesting
· All instructions executed in one or two machine
cycles
· Power down and wake-up functions to reduce power
consumption
· Wide range of available package types
General Description
These TinyPowerTM A/D Type with LCD 8-bit high perfor-
mance RISC architecture microcontrollers are specifi-
cally, designed for applications that interface directly to
analog signals and which require an LCD or LED inter-
face. The devices include an integrated multi-channel An-
alog to Digital Converter, Pulse Width Modulation outputs
and an LCD/LED driver.
With their fully integrated SPI and I2C functions, design-
ers are provided with a means of easy communication
with external peripheral hardware. The benefits of inte-
grated A/D, LCD, and PWM functions, in addition to low
power consumption, high performance, I/O flexibility
and low-cost, provides the device with the versatility for
a wide range of products in the home appliance and in-
dustrial application areas. Some of these products
could include electronic metering, environmental moni-
toring, handheld instruments, electronically controlled
tools, motor driving in addition to many others.
The unique Holtek TinyPower technology also gives the
devices extremely low current consumption characteris-
tics, an extremely important consideration in the present
trend for low power battery powered applications. The
usual Holtek MCU features such as power down and
wake-up functions, oscillator options, programmable
frequency divider, etc. combine to ensure user applica-
tions require a minimum of external components.
Mask type devices, the HT56C668 and HT56C678, are
also available for volume production products.
Rev. 1.20
1 March 4, 2010
1 page  
www.DataSheet4U.com
HT56R67/HT56R668/HT56C668/HT56R678/HT56C678/HT56R688
Pin Description
The following table depicts the pins common to all devices.
Pin Name
I/O
Configuration
Option
Description
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4/TMR2
PA5/TMR3
PA6~PA7
I/O
BZ/BZ
PFD
Bidirectional 8-bit input/output port. Each individual bit on this port can be
configured as a wake-up input using the PAWU register. Software instruc-
tions determine if the pin is a CMOS output or Schmitt trigger input. A
pull-high resistor can be connected to each pin using the PAPU register. Pins
PA0, PA1, PA3, PA4 and PA5 are shared with BZ, BZ, PFD, TMR2 and
TMR3 respectively, the function of which is chosen via configuration option.
Pins PA0~PA3 can also be setup as open drain pins using the MISC register.
PB0/AN0~
PB7/AN7
I/O
Bidirectional 8-bit input/output port. Software instructions determine if the pin
is a CMOS output or Schmitt trigger input. A pull-high resistor can be con-
¾
nected to each pin using the PBPU register. PB is pin-shared with the A/D in-
put pins. The A/D inputs are selected via software instructions. Once
selected as an A/D input, the I/O function and pull-high resistor selections are
disabled automatically.
PD0/PWM0~
PD3/PWM3
PD4/INT0
PD5/INT1
PD6/TMR0
PD7/TMR1
I/O
Bidirectional 8-bit input/output port. Software instructions determine if the pin
is a CMOS output or Schmitt trigger input. A pull-high resistor can be con-
¾
nected to each pin using the PDPU register. The PWM outputs,
PWM0~PWM3, are pin shared with pins PD0~PD3, the function of which is
chosen using the PWM registers. Pins PD4~PD7 are pin-shared with INT0,
INT1, TMR0 and TMR1 respectively.
OSC1
OSC2
OSC1, OSC2 are connected to an external RC network or external crystal,
I
O
Crystal or RC
or EC
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 sys-
tem clock at 1/4 frequency. EC is external clock mode, we can input clock
source directly to OSC1 pin.
OSC3
OSC4
I
O
32768Hz
OSC3 and OSC4 are connected to a 32768Hz crystal oscillator to form a real
time clock for fSUB. This 32768Hz crystal is disabled/enabled by configuration
option.
VREF
I ¾ A/D reference voltage input pin
RES
I ¾ Schmitt Trigger reset input. Active low
VDD
¾ ¾ Positive power supply
VSS
¾ ¾ Negative power supply, ground
AVDD ¾ ¾ Analog positive power supply
AVSS
¾ ¾ Analog negative power supply, ground
Rev. 1.20
5 March 4, 2010
5 Page 
www.DataSheet4U.com
HT56R67/HT56R668/HT56C668/HT56R678/HT56C678/HT56R688
Symbol
Parameter
Test Conditions
VDD Conditions
I/O Port Sink Current
3V
IOL1 (PA, PB, PD; SEG, COM Level or
VOL=0.1VDD
LED Output)
5V
I/O Port Source Current
3V
IOH1 (PA, PB, PD; SEG, COM Level or
VOH=0.9VDD
LED Output)
5V
IOL2
LCD Common and Segment
Current
3V
VOL=0.1VDD
5V
IOH2
LCD Common and Segment
Current
3V
VOH=0.9VDD
5V
RPH
Pull-high Resistance for I/O
Ports
3V
5V
¾
¾
Min.
6
10
-2
-5
210
350
-80
-180
20
10
Note:
1. 32768Hz is slow start mode (RTCC.4=1) in D.C. current measurement.
2. LCD waveform is in Type A condition.
3. fS is internal clock for Buzzer, RTC, Time base and WDT.
4. Timer0/1 off. Timer filter disable in all test condition.
5. All peripherals are in OFF condition if not mentioned at IDD, ISTB tests.
Typ.
12
25
-4
-8
420
700
-160
-360
60
30
Max.
¾
¾
¾
¾
¾
¾
¾
¾
100
50
Unit
mA
mA
mA
mA
mA
mA
mA
mA
kW
kW
A.C. Characteristics
Symbol
Parameter
fSYS
System Clock
(Crystal OSC, RC OSC)
Test Conditions
VDD Conditions
2.2V~5.5V
¾ 3.0V~5.5V
4.5V~5.5V
fRTCOSC RTC Frequency
¾¾
fTIMER
Timer I/P Frequency
(TMR0/TMR1)
2.2V~5.5V
¾ 3.0V~5.5V
4.5V~5.5V
fRC32K
32K RC Oscillator
¾ 2.2V~5.5V, After Trim
tRES External Reset Low Pulse Width ¾
¾
tLVR Low Voltage Reset Time
¾
¾
tSST1
System Start-up Timer Period
¾ Power-on
tSST2
System Start-up Timer Period for
XTAL or RTC oscillator
¾
Wake-up from Power
Down Mode
tSST3
System Start-up Timer Period for
External RC or External Clock
¾
Wake-up from Power
Down Mode
tINT Interrupt Pulse Width ¾ ¾
Note: *tSYS=1/fSYS
Ta=25°C
Min. Typ. Max. Unit
100 ¾ 4000
100 ¾ 8000
100 ¾ 12000
¾ 32768 ¾
0 ¾ 4000
0 ¾ 8000
0 ¾ 12000
28.8 32.0 35.2
1¾ ¾
0.1 0.4
0.6
¾ 1024 ¾
¾ 1024 ¾
kHz
kHz
kHz
Hz
kHz
kHz
kHz
kHz
ms
ms
tSYS*
tSYS*
¾1
2 tSYS*
1¾ ¾
ms
Rev. 1.20
11 March 4, 2010
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HT56C678.PDF ] | |
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