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  Holtek Semiconductor Electronic Components Datasheet  

HT47R20A-1 Datasheet

R-F Type 8-Bit MCU

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HT47R20A-1 pdf
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HT47R20A-1/HT47C20-1
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
- HA0045E Distinguishing between the Different Devices in the HT47 MCU Series
Features
· Operating voltage: 2.2V~5.5V
· Eight bidirectional I/O lines
· Four input lines
· One interrupt input
· One 16-bit programmable timer/event counter with
PFD (programmable frequency divider) function
· On-chip crystal and RC oscillator for system clock
· One 32.768kHz crystal oscillator for real time clock or
system clock
· Watchdog Timer
· 2K´16 program memory
· 64´8 data memory RAM
· One Real Time Clock (RTC)
· One 8-bit prescaler for RTC
· One low voltage detector
· One low voltage reset circuit
· One buzzer output
· HALT function and wake-up feature reduce power
consumption
· LCD bias C type or R type
· One LCD driver with 20´2, 20´3 or 19´4 segments
· One IR carrier output
· Two channels RC type A/D converter
· Four-level subroutine nesting
· Bit manipulation instruction
· 16-bit table read instruction
· Up to 1ms instruction cycle with 4MHz system clock
· All instructions in one or two machine cycles
· 63 powerful instructions
· 64-pin QFP package
General Description
The HT47R20A-1/HT47C20-1 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 HT47C20-1 is fully pin and functionally
compatible with the OTP version HT47R20A-1 device.
The advantages of low power consumption, I/O flexibil-
ity, programmable frequency divider, timer functions,
oscillator options, 2-channel RC type A/D Converter,
LCD driver, HALT and wake-up functions, enhance the
versatility of these devices to suit a wide range of Resis-
tor to Frequency application possibilities such as sensor
signal processing, remote metering, industrial control,
consumer products, subsystem controllers, etc.
Rev. 1.70
1 June 14, 2005


  Holtek Semiconductor Electronic Components Datasheet  

HT47R20A-1 Datasheet

R-F Type 8-Bit MCU

No Preview Available !

HT47R20A-1 pdf
Block Diagram
P B 0 /IN T
P ro g ra m
EPRO M
P ro g ra m
C o u n te r
STAC K
In te rru p t
C ir c u it
IN T C
In s tr u c tio n
R e g is te r
MP
M
U
D ATA
M e m o ry
X
In s tr u c tio n
D ecoder
T im in g
G e n e ra to r
O SC2
O SC4
C1
C2
O SC1
O SC3
RES
VDD
VSS
H a lv e
V o lta g e
M UX
A LU
S h ifte r
STATU S
BP
ACC
LC D
M e m o ry
L C D D r iv e r
V 1 V 2 V LC D C O M 0 ~ C O M 3 / S E G 0 ~
C O M 2 S E G 19 S E G 18
HT47R20A-1/HT47C20-1
T im e r A
S y s te m C lo c k
M T1
U R T C O u tp u t
X P B 2 /T M R
O v e r flo w
PFD
T im e r B
A /D C lo c k
R C T ype
A /D C o n v e rte r
P A 3 /P F D
IN 0
CS0
RS0
C R T0
R T0
IN 1
CS1
RS1
R T1
R TC
W DT
T im e B a s e
S Y S C L K /4
M
U R TC O SC
X
W DT O SC
P o rt B
PB
P o rt A
PA
H A L T E N /D IS
P B 0 /IN T
PB1
P B 2 /T M R
PB3
P A 0 /B Z
P A 1 /B Z
P A 2 /IR
P A 3 /P F D
P A 4~P A 7
O SC3
O SC4
L V D /L V R
Rev. 1.70
2 June 14, 2005


Part Number HT47R20A-1
Description R-F Type 8-Bit MCU
Maker Holtek Semiconductor
Total Page 30 Pages
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