AT87C52X2-RLRUM Atmel, AT87C52X2-RLRUM Datasheet - Page 49
![MCU ROMLESS 32X2 3V 44-VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
AT87C52X2-RLRUM
Manufacturer Part Number
AT87C52X2-RLRUM
Description
MCU ROMLESS 32X2 3V 44-VQFP
Manufacturer
Atmel
Series
87Cr
Datasheet
1.AT80C32X2-RLRUL.pdf
(55 pages)
Specifications of AT87C52X2-RLRUM
Core Processor
8051
Core Size
8-Bit
Speed
40/20MHz
Connectivity
UART/USART
Peripherals
POR
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
External Clock Drive
Characteristics (XTAL1)
External Clock Drive
Waveforms
Figure 23. External Clock Drive Waveforms
AC Testing Input/Output
Waveforms
Figure 24. AC Testing Input/Output Waveforms
Float Waveforms
Figure 25. Float Waveforms
4184I–8051–02/08
INPUT/OUTPUT
0.45V
VCC-0.5V
VCC-0.5V
Table 36. AC Parameters
AC inputs during testing are driven at V
Timing measurement are made at V
For timing purposes a port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded V
occurs. I
0.2VCC-0.1 V
T
0.7VCC
CHCX
Symbol
0.45V
VOH-0.1 V
VOL+0.1 V
T
T
T
T
T
TCHCL
CHCX
CLCH
CHCL
CLCL
CLCX
/T
CLCX
OL
/I
OH
Parameter
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
FLOAT
≥ ± 20mA.
VLOAD
TCLCX
0.2VCC+0.9
0.2VCC-0.1
TCLCL
VLOAD+0.1 V
VLOAD-0.1 V
IH
min for a logic “1” and V
CC
TCLCH
- 0.5 for a logic “1” and 0.45V for a logic “0”.
TCHCX
Min
25
40
5
5
IL
max for a logic “0”.
Max
60
5
5
OH
/V
Units
OL
ns
ns
ns
ns
ns
%
level
49