AT87C51RC2-3CSUM Atmel, AT87C51RC2-3CSUM Datasheet - Page 58

• Manufacturer Part Number: AT87C51RC2-3CSUM
• Description: IC 8051 MCU 32K OTP 40MHZ 40DIP
• Manufacturer: Atmel
• Series: 87Cr

Specifications of AT87C51RC2-3CSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/20MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

11. Electrical Characteristics
11.1
11.2
11.3
Table 11-1.
58
Ambiant Temperature Under Bias:
C = commercial......................................................0°C to 70°C
I = industrial ........................................................-40°C to 85°C
Storage Temperature .................................... -65°C to + 150°C
Voltage on V
Voltage on Any Pin to V
Power Dissipation .............................................................. 1 W
Symbol
V
V
V
V
V
V
OL1
OL2
IH1
OL
IH
IL
Absolute Maximum Ratings
Power Consumption Measurement
DC Parameters for Standard Voltage
AT/TS8xC51Rx2
Parameter
Input Low Voltage
Input High Voltage except XTAL1, RST
Input High Voltage, XTAL1, RST
Output Low Voltage, ports 1, 2, 3, 4, 5
Output Low Voltage, port 0
Output Low Voltage, ALE, PSEN
CC
DC Parameters in Standard Voltage
to V
SS
........................................-0.5 V to + 7 V
SS
........................-0.5 V to V
Since the introduction of the first C51 devices, every manufacturer made operating Icc measure-
ments under reset, which made sense for the designs were the CPU was running under reset. In
Atmel new devices, the CPU is no more active during reset, so the power consumption is very
low but is not really representative of what will happen in the customer system. That’s why, while
keeping measurements under Reset, Atmel presents a new way to measure the operating Icc:
Using an internal test ROM, the following code is executed:
Label:
Ports 1, 2, 3 are disconnected, Port 0 is tied to FFh, EA = Vcc, RST = Vss, XTAL2 is not con-
nected and XTAL1 is driven by the clock.
This is much more representative of the real operating Icc.
T
T
A
A
= 0°C to +70°C; V
= -40°C to +85°C; V
(6)
(6)
SS
CC
SS
= 0 V; V
+ 0.5 V
= 0 V; V
0.2 V
0.7 V
Min
-0.5
CC
CC
+ 0.9
CC
CC
= 5 V ± 10%; F = 0 to 40 MHz.
= 5 V ± 10%; F = 0 to 40 MHz.
*NOTICE:
Typ
SJMP Label (80 FE)
S
lute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only
and functional operation of the device at these or
any other conditions above those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions may affect device reliability.
Power dissipation is based on the maximum
allowable die temperature and the thermal resis-
tance of the package.
tresses at or above those listed under “ Abso-
0.2 V
V
V
CC
CC
Max
0.45
0.45
0.45
0.3
1.0
0.3
1.0
0.3
1.0
CC
+ 0.5
+ 0.5
- 0.1
Unit
V
V
V
V
V
V
V
V
V
V
V
V
I
I
I
I
I
I
I
I
I
OL
OL
OL
OL
OL
OL
OL
OL
OL
= 100 µA
= 1.6 mA
= 3.5 mA
= 200 µA
= 3.2 mA
= 7.0 mA
= 100 µA
= 1.6 mA
= 3.5 mA
Test Conditions
4188F–8051–01/08
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)