89C51IC2-CM ATMEL [ATMEL Corporation], 89C51IC2-CM Datasheet - Page 130

• Manufacturer Part Number: 89C51IC2-CM
• Description: 8-bit Flash Microcontroller with 2-wire Interface
• Manufacturer: ATMEL [ATMEL Corporation]

DC Parameters for Low
Voltage
T
T
Notes:
130
A
A
Symbol
= 0 C to +70 C; V
= -40 C to +85 C; V
I
I
I
CCIDLE
CCProg
V
R
V
V
V
CCOP
V
C
V
V
I
I
I
I
OH1
OL1
RST
PD
IH1
TL
OL
OH
IL
LI
IH
IO
IL
1. Operating I
2. Idle I
3. Power Down I
4. Capacitance loading on Ports 0 and 2 may cause spurious noise pulses to be superimposed on the V
5. Typical are based on a limited number of samples and are not guaranteed. The values listed are at room temperature and
6. Under steady state (non-transient) conditions, I
AT89C51IC2
Parameter
Input Low Voltage
Input High Voltage except RST, XTAL1
Input High Voltage, RST, XTAL1
Output Low Voltage, ports 1, 2, 3, 4
Output Low Voltage, port 0, ALE, PSEN
Output High Voltage, ports 1, 2, 3, 4
Output High Voltage, port 0, ALE, PSEN
Logical 0 Input Current ports 1, 2, 3, 4
Input Leakage Current for P0 only
Logical 1 to 0 Transition Current, ports 1, 2, 3,
RST Pulldown Resistor
Capacitance of I/O Buffer
Power Down Current
Power Supply Current on normal mode
Power Supply Current on idle mode
Power Supply Current during flash Write / Erase
V
V
52).
0.5V; XTAL2 N.C; Port 0 = V
ure 54).
and 3. The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins make 1 to 0
transitions during bus operation. In the worst cases (capacitive loading 100pF), the noise pulse on the ALE line may exceed
0.45V with maxi V
5V.
Maximum I
Maximum I
Port 0: 26 mA
Ports 1, 2 and 3: 15 mA
Maximum total I
SS
IH
= V
+ 0.5V,
CC
CC
is measured with all output pins disconnected; XTAL1 driven with T
- 0.5V; XTAL2 N.C.; EA = RST = Port 0 = V
SS
OL
OL
CC
SS
= 0V; V
per port pin: 10 mA
per 8-bit port:
CC
is measured with all output pins disconnected; XTAL1 driven with T
= 0V; V
OL
is measured with all output pins disconnected; EA = V
OL
for all output pins: 71 mA
peak 0.6V. A Schmitt Trigger use is not necessary.
CC
CC
= 2.7V to 3.6V; F = 0to 48 MHz
= 2.7V to 3.6V; F = 0 to 48 MHz
CC
(6)
; EA = RST = V
(6)
0.2 V
SS
0.7 V
0.9 V
0.9 V
OL
Min
-0.5
CC
50
(see Figure 53).
must be externally limited as follows:
+ 0.9
CC
CC
CC
CC
. I
Frequency
CC
(MHz) +
200
10
0.4 x
Typ
would be slightly higher if a crystal oscillator used (see Figure
20
(5)
(5)
0.4 x Frequency (MHz) + 5
0.3 x Frequency (MHz) + 5
SS
, PORT 0 = V
CLCH
0.2 V
V
V
, T
CC
CC
Max
0.45
0.45
-650
250
-50
10
50
CC
CLCH
10
CHCL
+ 0.5
+ 0.5
- 0.1
, T
CC
= 5 ns, V
CHCL
; XTAL2 NC.; RST = V
= 5 ns (see Figure 55.), V
IL
Unit
= V
mA
mA
mA
k
pF
V
V
V
V
V
V
V
A
A
A
A
OL
SS
s of ALE and Ports 1
Test Conditions
I
I
I
I
V
0.45V < V
V
Fc = 3 MHz
T
V
3.6V
V
V
V
+ 0.5V, V
OL
OL
OH
OH
A
IN
IN
CC
CC
CC
CC
= 25 C
= 0.8 mA
= 1.6 mA
= -10 A
= -40 A
= 0.45 V
= 2.0V
4301A–8051–01/04
= 2.7V to
= 3.6 V
= 3.6 V
= 5.5V
(3)
SS
IN
IH
(see Fig-
(8)
(1)
(2)
< V
(4)
(4)
= V
CC
CC
IL
=
-