AT89LS8252-12AC Atmel, AT89LS8252-12AC Datasheet - Page 29
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AT89LS8252-12AC
Manufacturer Part Number
AT89LS8252-12AC
Description
IC MICRO CTRL 12MHZ 44TQFP
Manufacturer
Atmel
Series
89LSr
Datasheet
1.AT89LS8252-12AC.pdf
(35 pages)
Specifications of AT89LS8252-12AC
Core Processor
8051
Core Size
8-Bit
Speed
12MHz
Connectivity
SPI, UART/USART
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
Other names
AT89LS825212AC
Available stocks
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Price
Serial Port Timing: Shift Register Mode Test Conditions
The values in this table are valid for V
Shift Register Mode Timing Waveforms
AC Testing Input/Output Waveforms
Notes:
0850C–MICRO–3/06
Symbol
t
t
t
t
t
XLXL
QVXH
XHQX
XHDX
XHDV
1.
AC Inputs during testing are driven at V
for a logic 1 and 0.45V for a logic 0. Timing mea-
surements are made at V
max. for a logic 0.
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock
Rising Edge
Output Data Hold After Clock
Rising Edge
Input Data Hold After Clock
Rising Edge
Clock Rising Edge to Input Data
Valid
IH
min. for a logic 1 and V
CC
= 2.7V to 6V and Load Capacitance = 80 pF.
CC
- 0.5V
Min
700
1.0
50
12 MHz Oscillator
0
(1)
IL
Float Waveforms
Notes:
Max
700
1.
For timing purposes, a port pin is no longer floating
when a 100 mV change from load voltage occurs. A
port pin begins to float when a 100 mV change from
the loaded V
10t
2t
CLCL
12t
CLCL
Min
Variable Oscillator
OH
CLCL
0
- 117
/V
(1)
- 133
OL
level occurs.
10t
AT89LS8252
CLCL
Max
- 133
Units
µs
ns
ns
ns
ns
29