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Details, datasheet, quote on part number:HT47C20L
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Datasheet text preview:
HT47C20L
8-Bit R-F Type Low Voltage Mask MCU
Features
· Operating voltage: 1.2V~2.2V · Eight bidirectional I/O lines · Four input lines · One interrupt input · One 16-bit programmable timer/event counter with · One low voltage reset circuit · HALT function and wake-up feature reduce power
consumption
· LCD bias C type · One LCD driver with 20´2 or 20´3 or 19´4 segments · Two channels RC type A/D converter · Four-level subroutine nesting · Bit manipulation instruction · 16-bit table read instruction · Up to 122ms instruction cycle with 32768Hz system
PFD (programmable frequency divider) function
· On-chip 32768Hz crystal oscillator · Watchdog Timer · 2K´16 program memory ROM · 64´8 data memory RAM · One real time clock (RTC) · One 8-bit prescaler for real time clock · One buzzer output · One low voltage detector
clock
· All instructions in one or two machine cycles · 63 powerful instructions · 64-pin QFP package
General Description
The HT47C20L 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 system in particular.
Rev. 1.70
1
May 9, 2003
HT47C20L
Block Diagram
P B 0 /IN T
P ro g ra m ROM
P ro g ra m C o u n te r
ST ST ST ST
AC AC AC AC
K0 K1 K2 K3
In te rru p t C ir c u it
T im e r A
M U
X
IN T C P.D T im e r B A /D
S y s te m C lo c k T1 R T C O u tp u t P B 2 /T M R P B 3 /P . D C lo c k IN 0 CS RS CR RT IN 1 CS RS RT 1 0 0 0 1 1 T0
In s tr u c tio n R e g is te r
MP
M U
X
DATA M e m o ry
RC Type A /D 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 R e a l T im e C lo c k STATUS W DT T im e B a s e BP P o rt B PB P B 0 /IN T PB1 P B 2 /T M R PB3 P o rt A PA PA PA PA PA PA 0 /B 1 /B 2 3 /P 4~P Z Z .D A7 32768H z ( a lw a y s o n )
S h ifte r
OSC2
OS RE VD VS S
D
S
C1
ACC LCD M e m o ry L C D D r iv e r
C1 C2
D o u b le V o lta g e
V1
V2
V3
C O M 0~ COM2
C O M 3/ SEG 19
SEG 0~ SEG 18
Rev. 1.70
2
May 9, 2003
HT47C20L
Pin Assignment
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
NC
NC
C1
C2
V1
V2
V3 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 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
P A 1 /B Z PA2 P A 3 /P . D PA4 PA5 PA6 PA7 P B 0 /IN T PB1 P B 2 /T M R PB3 NC TEST NC NC NC NC VSS
H T47C 20L 6 4 Q . P -A
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
IN 1
RT0
CRT0
RS0
CS1
RT1
RS1
Rev. 1.70
3
May 9, 2003
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