AT89LP828-AU Atmel, AT89LP828-AU Datasheet - Page 136
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AT89LP828-AU
Manufacturer Part Number
AT89LP828-AU
Description
8-bit Microcontrollers - MCU Single-Cycle 8051 8K ISP Flash, 2.4-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP828-AU.pdf
(149 pages)
Specifications of AT89LP828-AU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
8051
Data Bus Width
8 bit
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24.8
The values in this table are valid for V
Figure 24-15. Shift Register Mode Timing Waveform
24.9
24.9.1
Note:
24.9.2
Note:
136
Symbol
t
t
t
t
t
XLXL
QVXH
XHQX
XHDX
XHDV
Serial Port Timing: Shift Register Mode
Test Conditions
1. AC Inputs during testing are driven at V
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
AT89LP428/828
AC Testing Input/Output Waveform
Float Waveform
Write to SBUF
V
float when 100 mV change from the loaded V
Output Data
Input Data
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
Input Data Valid to Clock Rising Edge
IH
Clear RI
min. for a logic “1” and V
Clock
(1)
Valid
0
IL
CC
max. for a logic “0”.
= 2.4V to 5.5V and Load Capacitance = 80 pF.
Valid
1
CC
(1)
- 0.5V for a logic “1” and 0.45V for a logic “0”. Timing measurements are made at
OH
Valid
/V
OL
2
level occurs.
Valid
3
Valid
4
2t
t
t
Valid
CLCL
CLCL
CLCL
Min
5
15
Variable Oscillator
0
-15
-15
-15
Valid
6
Max
Valid
7
3654A–MICRO–8/09
Units
µs
ns
ns
ns
ns
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