|
|
PDF HT47C10-1 Data sheet ( Hoja de datos )
| Número de pieza | HT47C10-1 | |
| Descripción | R-F Type 8-Bit MCU | |
| Fabricantes | Holtek Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de HT47C10-1 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
HT47R10A-1/HT47C10-1
R-F Type 8-Bit MCU
Technical Document
· Tools Information
· FAQs
· Application Note
- HA0029E Using the Time Base Function in the HT47R20A-1
- HA0030E Using the RTC in the HT47R20A-1
- HA0034E Using the Buzzer Function in the HT47R20A-1
- HA0036E Using the PFD Function in the HT47R20A-1
Features
· Operating voltage:
fSYS=4MHz: 2.2V~5.5V
fSYS=8MHz: 3.3V~5.5V
· Eight bidirectional I/O lines
· Single external interrupt input
· Single 16-bit programmable timer/event counter
· On-chip crystal and RC oscillator for system clock
· 32.768kHz crystal oscillator for real time clock or sys-
tem clock
· Watchdog Timer
· 1K´16 program memory
· 32´8 data memory RAM
· Real Time Clock (RTC)
· 8-bit prescaler for RTC
· Low voltage detector
· Low voltage reset circuit
· Buzzer output
· Power down and and wake-up functions reduce
power consumption
· C type or R type LCD bias
· LCD driver circuits with 10´2, 10´3 or 9´4 segments
· Single channel RC type A/D converter
· Two-level subroutine nesting
· Bit manipulation instructions
· 16-bit table read instruction
· Up to 0.5ms instruction cycle with 8MHz system clock
· All instructions executed within one or two machine
cycles
· 63 powerful instructions
· 44-pin QFP package
General Description
The HT47R10A-1/HT47C10-1 are 8-bit, high perfor-
mance, RISC architecture microcontroller devices spe-
cifically designed for applications that interface directly
to analog signals, such as those from sensors. The
mask version HT47C10-1 device is fully pin and func-
tionally compatible with the HT47R10A-1, OTP version
device.
The advantages of low power consumption, I/O flexibil-
ity, programmable frequency divider, timer functions,
oscillator options, RC type A/D Converter, LCD driver,
Power Down and wake-up functions, enhance the ver-
satility of these devices to suit a wide range of Resistor
to Frequency application possibilities such as sensor
signal processing, remote metering, industrial control,
consumer products, subsystem controllers, etc.
The HT47C10-1 is under development and will be avail-
able soon.
Rev. 1.00
DataSheet4 U .com
1 June 2, 2006
1 page  
www.DataSheet4U.com
HT47R10A-1/HT47C10-1
A.C. Characteristics
Symbol
Parameter
fSYS1
System Clock
(Crystal OSC, RC OSC)
fSYS2
System Clock
(32768Hz Crystal OSC)
fRTCOSC RTC Frequency
fTIMER Timer I/P Frequency
tWDTOSC Watchdog Oscillator Period
tRES External Reset Low Pulse Width
tSST System Start-up Timer Period
tLVR Low Voltage Width to Reset
tINT Interrupt Pulse Width
Note: *tSYS=1/fSYS1, 1/fSYS2
Test Conditions
VDD Conditions
¾ 2.2V~5.5V
¾ 3.3V~5.5V
¾¾
¾¾
¾ 2.2V~5.5V
¾ 3.3V~5.5V
3V ¾
5V ¾
¾¾
¾ Wake-up from HALT
¾¾
¾¾
Ta=25°C
Min. Typ. Max. Unit
400 ¾ 4000 kHz
400 ¾ 8000 kHz
¾ 32768 ¾
Hz
¾ 32768 ¾
0 ¾ 4000
0 ¾ 8000
45 90 180
32 65 130
1 ¾¾
¾ 1024 ¾
0.25 1
2
1 ¾¾
Hz
kHz
kHz
ms
ms
ms
tSYS
ms
ms
Rev. 1.00
DataSheet4 U .com
5 June 2, 2006
5 Page 
www.DataSheet4U.com
HT47R10A-1/HT47C10-1
oscillator (used as system oscillator or RTC oscillator) is
also designed for timing purposes, the internal timing
(RTC, time base, WDT) operation still runs even if the
system enters the Power Down mode.
If the RC oscillator is used, an external resistor between
OSC1 and ground is required, whose range should be
between 24kW and 1MW. A frequency equal to the sys-
tem clock divided by 4, is available on OSC2, which can
be used for synchronisation purposes. As this is an
open drain output, a pull-high resistor is required. The
RC oscillator provides the most cost effective solution,
however as its frequency of oscillation may vary with
VDD, temperature and process variations, it is therefore
not suitable for timing sensitive operations where accu-
rate oscillator frequencies are desired.
On the other hand, if the crystal oscillator is selected, a
crystal across OSC1 and OSC2 is needed to provide the
feedback and phase shift required for oscillation, and no
other external components are required. A resonator
may be connected between OSC1 and OSC2 instead of
the crystal to get a frequency reference, but two external
capacitors connected between OSC1, OSC2 and
ground are required.
Another oscillator circuit is designed for the real time
clock, which has a fixed frequency of 32.768kHz. A
32.768kHz crystal should be connected between OSC3
and OSC4 for this function.
The RTC oscillator circuit can be controlled to start up
quickly by clearing the QOSC bit, which is bit 4 in the
RTCC register. At power on this bit will be low, allowing
for fast start up, but it is recommended to set it high after
around 2 seconds to conserve power.
The WDT oscillator is a free running on-chip RC oscilla-
tor, requiring no external components. Although the sys-
tem enters the power down mode, the system clock
stops, and the WDT oscillator still works with a period of
approximately 65ms at 5V. The WDT oscillator can be
disabled by a configuration option to conserve power.
Watchdog Timer - WDT
The WDT (fS) clock source is implemented by a dedi-
cated RC oscillator (WDT oscillator) or instruction clock
(system clock divided by 4) or a real time clock oscillator
(RTC oscillator), determined by configuration options.
The timer is designed to prevent software malfunctions
or a sequence jumping to an unknown location with un-
predictable results. The Watchdog Timer can be dis-
abled by a configuration option. If the Watchdog Timer is
disabled, any instructions related to the WDT will result
in no operation.
If the WDT clock source chooses the internal WDT oscil-
lator, the time-out period may vary with temperature,
VDD, and process variations. On the other hand, if the
clock source selects the instruction clock and the
²HALT² instruction is executed, the WDT will stop
counting and lose its protecting purpose.
When the device operates in a noisy environment, using
the on-chip RC oscillator (WDT OSC) is strongly recom-
mended, since a HALT can stop the system clock.
The WDT overflow under normal operation will initialise
a ²chip reset² and set the status bit TO. Whereas in the
HALT mode, the overflow will initialise a ²warm reset² in
which only the Program Counter and Stack Pointer are
reset to 0. To clear the WDT contents, three methods are
adopted, an external reset (a low level to the RES pin),
software instruction, or a ²HALT² instruction.
There are two methods of using software instructions to
clear the Watchdog Timer, one of which must be chosen
by configuration option. The first option is to use the sin-
gle ²CLR WDT² instruction while the second is to use the
two commands ²CLR WDT1² and ²CLR WDT2². For the
first option, a simple execution of ²CLR WDT² will clear the
WDT while for the second option, both ²CLR WDT1² and
²CLR WDT2² must both be executed to successfully clear
the WDT. Note that for this second option, if ²CLR WDT1²
is used to clear the WDT, successive executions of this in-
struction will have no effect, only the execution of a ²CLR
WDT2² instruction will clear the WDT. Similarly after the
²CLR WDT2² instruction has been executed, only a suc-
cessive ²CLR WDT1² instruction can clear the Watchdog
Timer.
The WDT time-out period ranges from 215/fS~216/fS
since the clear Watchdog Timer instructions only clears
the last two-stages of the WDT.
S y s te m C lo c k /4
R TC
O SC
32768H
z
W
O
DT
SC
12kH
z
O p tio n
fS
fS /2 8
D iv id e r
W DT
P r e s c a le r
O p tio n
W D T C le a r
CK T
R
CK T
R
Watchdog Timer
T im e - o u t R e s e t
2 15/fS ~ 2 16/fS
2 14/fS ~ 2 15/fS
2 13/fS ~ 2 14/fS
2 12/fS ~ 2 13/fS
Rev. 1.00
11 June 2, 2006
DataSheet4 U .com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HT47C10-1.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HT47C10-1 | R-F Type 8-Bit MCU | Holtek Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |