Hyundai Micro Electronics
GMS81C2020/GMS81C2120
2. BLOCK DIAGRAM (GMS81C2020)
R07
R06
R05
R04
R03/BUZO
R02/EC0
R01/INT1
R00/INT0
ADC Power
Supply
AV
DD
AV
SS
R10~R17
R20~R27
R30~R35
Vdisp/RA
Driver
Buzzer
R0
R1
R2
R3
PSW
ALU
Accumulator
Stack Pointer
PC
Data Memory
(448 bytes)
Program
Memory
Data Table
Interrupt Controller
S yste m c o n tro lle r
S yste m
C lo ck C o n tro lle r
S u b S yste m
C lo ck C o n tro lle r
T im in g g e n e ra to r
C lo c k
G e n e ra to r
8-b it B a sic
In te rva l
T im e r
Watchdog
Timer
8-bit
Timer/
Counter
8-bit serial
Interface
8-bit PWM
8-bit
ADC
PC
R4
R5
R6
R7
RESETB
R40 / T0O
R41
R42
R43
Power
Supply
R50
R51
R52
R53 / SCLK
R54 / SIN
R55 / SOUT
R56 / PWM1O/T1O
R57
R60 / AN0
R61 / AN1
R62 / AN2
R63 / AN3
R64 / AN4
R65 / AN5
R66 / AN6
R67 / AN7
R70 / AN8
R71 / AN9
R72 / AN10
R73 / AN11
XO
SXO
XI
Nov. 1999 Ver 0.0
V
DD
V
SS
SXI
preliminary
3
HYNIX [ HYNIX SEMICONDUCTOR ]
