Advertisement
KS56C820 (MICOM) : IC7530
P3. 4/LCDSY
3.2
3.3
P6. 0/KSO
PG. 1/KS1.
PS. 2/KS2
P6. 3/KS3
P7. o/ks4 (]
P7. 1/KSS
P7. 2/KS6
7. 3/KS7
PS.0
PS. 4
5.2
PS.3
p4.0 CJ
SBRSAIRREBRESRRBURR
VANGHANATATUOQQNATAVANGQOTINATATOQQQOTATITI
80 [—- sec2a/t
73[— sec2a/t
78{—
sece7/+
77
sec26/t
76 [_] sec25/t
75[- sese4/t
74[
7] sec23
73(J see22
72[—-
seeas
71[—-
seceo
70[—
see19
63[—
seis
68] seG17
67
sesi6
66 [7] secis
es[7 1) seci4
ONC]
SP
oda
(|
96
4ANOLX
[=]
os osas
ts
geass
293s
Jes
eroasC_
+9
Q
-
a
oth
Pin Name
Pin Description
P1.0-P1.3
4-bit Input
Internal pull-up resistor can
P2, P7
4-bit InpuvOurput
be specified in 4-bit unit
P3, P6
VO mode selectable in 1-bit unit by softwarde
by solftware
P4, PS
4-it inpuvoutput, N-ch open drain
P8.0-P8.7
Ourputs in 1-bit unit (shared with segment outputs)
SEGO-SEG23
'Segment output for LCD display
SEG24-SEG31
'Segment output for LCD display (shared with Port 8)
'COMO-COM3
'Common signal output for LCD display
VLCO-VLC2
LCD power supply pin
BIAS
LCD power supply control pin for 3/5V operating
LODCK
__| _ LCD clock output for display expansion
LCDSY
LCD sync. clock output for display expansion
TCL
Timer/Counter external clock input
TCLO
Timer/Counter clock output
INTO, 1, 2,4
External interrupt input
CLO
Clock output
BUZ
2KHz clock output for buzzer
KS0-KS7
Semi-interrupt input detecting external falling edge
SCK, SI, SO
SCK: serial clock, SI: serial input, SO: serial output
Xin, Xour
Crysta/Geramic or RC clock VO for Main-system clock
XTint XTour
—26—
Advertisement
