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AT89C2051-12SU
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
13
0368H–MICRO–6/08
AT89C2051
18.
External Cloc
k Drive W
a
vef
orms
()
19.
External Cloc
k Drive
Symbol
P
aram
eter
V
CC
= 2.7V to 6.0V
V
CC
= 4.0V to 6.0V
Units
Min
Max
Min
Max
1/t
CLCL
Oscillator F
requency
0
12
0
24
MHz
t
CLCL
Clock P
eriod
83.3
41.6
ns
t
CHCX
High Time
30
15
ns
t
CLCX
Low Time
30
15
ns
t
CLCH
Rise Time
20
20
ns
t
CHCL
F
all Time
20
20
ns
20.
Serial P
or
t Timing: Shift Register Mode T
est Conditions
V
CC
= 5.0V
±
20%; Load Capacitance = 80 pF
Symbol
Parameter
12 MHz Osc
V
ariable Oscillator
Units
Min
Max
Min
Max
t
XLXL
Serial Port Clo
ck Cycle Time
1.0
12 t
CLCL
µs
t
QVXH
Output Data Setup to Clock Rising Edge
700
10 t
CLCL
-133
ns
t
XHQX
Output Data Hold after Clock Rising Edge
50
2 t
CLCL
-117
ns
t
XHDX
Input Data Hold
after Clock Rising Edge
0
0
ns
t
XHD
V
Clock Rising Edge to Input Data V
alid
700
10 t
CLCL
-133
ns
14
0368H–MICRO–6/08
AT89C2051
21.
Shift Register Mode Timing W
ave
f
orms
22.
A
C T
esting Input/Output W
avef
orms
(1)
Note:
1.
AC Inputs during testing are driven at V
CC
- 0.5V f
or a logic 1 and 0.45V for a lo
gic 0. Timing measurements are made at V
IH
min. f
or a logic 1
and V
IL
max. for a logic 0.
23.
Float W
avef
orms
(1)
Note:
1.
F
or timing pur
poses, a por
t pin is no longer floating when a 100 mV chan
ge from load voltage occurs. A port pin begins t
o
float when 100 mV change from the loaded V
OH
/V
OL
le
vel occurs
.
15
0368H–MICRO–6/08
AT89C2051
24.
I
CC
(Active Mode) Measurements
25.
I
CC
(Idle Mode) Measurements
26.
I
CC
(P
ower Do
wn Mode) Measurements
A
T89C2051
TYPICAL ICC -
ACTIVE
(85°C
)
0
5
10
15
20
0
6
12
18
24
FREQUEN
CY (MHz)
I
C
C
m
A
Vc
c=
6.0V
Vc
c=
5.0V
Vc
c=
3.0V
A
T89C2051
TYPICAL ICC - IDLE
(85°C)
0
1
2
3
036
9
1
2
FREQUEN
CY (MHz)
I
C
C
m
A
Vc
c=
6.0V
Vc
c=
5.0V
Vc
c=
3.0V
A
T89C2051
TYPICAL ICC vs.
VOLTAGE- POWE
R DOWN (85°C)
0
5
10
15
20
3.0V
4.0V
5.0V
6.0V
Vcc
VOLTAGE
I
C
C
µ
A
Notes:
1. XT
AL1 tied to GND
2. P
.1.0 and P1.1
= V
CC
or GND
3. Loc
k bits prog
rammed
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P19
AT89C2051-12SU
Mfr. #:
Buy AT89C2051-12SU
Manufacturer:
Microchip Technology / Atmel
Description:
8-bit Microcontrollers - MCU 20 PINS UART 2K FLASH-2MHZ 4V-5.5V
Lifecycle:
New from this manufacturer.
Delivery:
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