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Details, datasheet, quote on part number:HT47C20-1
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Datasheet text preview:
HT47R20A-1/HT47C20-1 8-Bit R-F Type MCU
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 · 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
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) · Oe 8-bit prescaler for RTC · One low voltage detector
General Description
The HT47R20A-1/HT47C20-1 are 8-bit, high performance, RISC architecture microcontroller devices specifically 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 flexibility, 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 Resistor to Frequency application possibilities such as sensor signal processing, remote metering, industrial control, consumer products, subsystem controllers, etc.
Rev. 1.00
1
June 11, 2003
HT47R20A-1/HT47C20-1
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 EPROM 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 C R C R IN C R R 0 S0 S0 RT0 T0 1 S1 S1 T1 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
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
T im in g G e n e ra to r
S h ifte r
W DT OSC P o rt B
OSC2 OSC4
OS OS RE VD VS S
S D
C1 C3
BP ACC LCD M e m o ry PB
P B 0 /IN T PB1 P B 2 /T M R PB3
C1 C2
H a lv e V o lta g e
L C D D r iv e r PA
P o rt A
V1 V2 V
LCD
C O M 0~ COM2
C O M 3/ SEG 19
SEG 0~ SEG 18 H ALT E N /D IS
PA0 PA1 PA2 PA3 PA4
/B /B /IR /P ~P
Z Z
.D A7
L V D /L V R
Rev. 1.00
2
June 11, 2003
HT47R20A-1/HT47C20-1
Pin Assignment
OSC4 OSC2 OSC3 OSC1
VLCD
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
V1
V2 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
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 T 4 7 R 2 0 A -1 H T 4 7 C 2 0 -1 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
RT1
CS1 RS1
IN 1
CRT0 RT0
RS0
CS0
IN 0
COM0
COM1
COM2
C O M 3 /S E G 1 9
Pad Assignment
HT47R20A-1/HT47C20-1
OSC1 OSC2 OSC3 OSC4 VLCD VDD RES 59 TEST3 TEST2 TEST1 2 3 1 C2 52 C1 53 V1 51 V2 49 48 47 46 45 44 43 P A 0 /B Z P A 1 /B Z P A 2 /IR P A 3 /P . D PA4 8 9 10 11 12 13 14 15 16 17 RT1 18 RS1 19 CS1 20 IN 1 21 RT0 22 CRT0 23 RS0 24 CS0 25 IN 0 26 COM0 27 COM1 28 COM2 29 C O M 3 /S E G 1 9 PA5 PA6 PA7 P B 0 /IN T PB1 P B 2 /T M R PB3 VSS 6 7 4 5 (0 , 0 ) 42 41 40 39 38 37 36 35 34 33 32 31 30 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
58
57
56
55
54
50
* The IC substrate should be connected to VSS in the PCB layout artwork. Rev. 1.00 3 June 11, 2003
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