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Details, datasheet, quote on part number:HT47C20
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Datasheet text preview:
HT47C20 8-Bit R-F Type Mask MCU
Features
· Operating voltage: 2.4V~3.6V · Eight bidirectional I/O lines · Four input lines · One interrupt input · One 16-bit programmable timer/event counter with · HALT function and wake-up feature reduce power
consumption
· LCD bias C type · One LCD driver with 20 ´ 3 or 19 ´ 4 segments · One 38kHz or 40kHz IR carrier output
PFD (programmable frequency divider) function
· On-chip crystal and RC oscillator for system clock · One 32.768kHz crystal oscillator for real time clock · Watchdog Timer · 2K´16 program memory ROM · 64´8 data memory RAM · One Real Time Clock (RTC) · One 8-bit prescaler for RTC · One buzzer output
(455kHz or 480kHz system clock only)
· Two channels RC type A/D converter · Four-level subroutine nesting · Bit manipulation instruction · 16-bit table read instruction · Up to 8.3ms instruction cycle with 480kHz system
clock
· All instructions in one or two machine cycles · 63 powerful instructions · 64-pin QFP package
General Description
The HT47C20 is an 8-bit high performance RISC-like m i c r o c o n t r o l l e r. I t s s i n g l e c y c l e i n s t r u c t i o n a n d two-stage pipeline architecture make high speed applications. The device is suited for use in multiple LCD low power applications among which are calculators, clock timers, games, scales, toys, thermometers, hygrometers, body thermometers, capacitor scaler, other hand held LCD products, and battery systems in particular.
Rev. 1.60
1
July 26, 2002
HT47C20
Block Diagram
P B 0 /IN T S y s te m M In te rru p t C ir c u it P ro g ra m ROM P ro g ra m C o u n te r STACK IN T C T im e r B U X T im e r A O v e r flo w A /D T1 C lo c k
R T C O u tp u t P B 2 /T M R P.D C lo c k IN 0 CS RS CR RT IN 1 CS RS RT 0 1 1 1 0 0 T0 P A 3 /P . D
In s tr u c tio n R e g is te r
MP
M U
X
DATA M e m o ry
A /D
R C Type C o n v e rte r
In s tr u c tio n D ecoder ALU T im in g G e n e ra to r
MUX
RTC STATUS W DT T im e B a s e M U X
S Y S C L K /4 RTC OSC OSC3 OSC4
S h ifte r
W DT OSC P o rt B
BP OSC2 OS RE VD VS S S D C1 ACC LCD M e m o ry H a lv e V o lta g e L C D D r iv e r PA V1 V2 V3 C O M 0~ COM2 C O M 3/ SEG 19 SEG 0~ SEG 18 PB
P B 0 /IN T PB1 P B 2 /T M R PB3
C1 C2
P o rt A
PA0 PA1 PA2 PA3 PA4
/B /B /IR /P ~P
Z Z
.D A7
Rev. 1.60
2
July 26, 2002
HT47C20
Pin Assignment
OSC4 OSC3 OSC2 OSC1 VDD
RES
NC
NC
P A 0 /B Z
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
64 63 62 61 60 59 58 57 56 55 54 53 52
C1
C2
V2
V3 51 50 49 48 47 46 45 44 SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG 10 SEG 11 SEG 12 SEG 13 SEG 14 SEG 15 SEG 16 SEG 17 SEG 18
V1
P A 1 /B Z P A 2 /IR P A 3 /P . D PA4 PA5 PA6 PA7 P B 0 /IN T PB1 P B 2 /T M R PB3 NC NC NC NC NC NC VSS
H T47C 20 6 4 Q . P -A
43 42 41 40 39 38 37 36 35 34 33
20 21 22 23 24 25 26 27 28 29 30 31 32
IN 0
COM0
COM1
COM2
C O M 3 /S E G 1 9
CS0
RS0
IN 1
CRT0 RT0
CS1 RS1
RT1
Rev. 1.60
3
July 26, 2002
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