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AT89LS51 Datenblatt(PDF) 21 Page - ATMEL Corporation

Teilenummer AT89LS51
Bauteilbeschribung  8-bit Low-Voltage Microcontroller with 4K Bytes In-System Programmable Flash
PDF  32 Pages
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Hersteller  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LS51 Datenblatt(HTML) 21 Page - ATMEL Corporation

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21
3053B–MICRO–3/05
AT89LS51
20. Serial Programming Characteristics
Figure 20-1. Serial Programming Timing
MOSI
MISO
SCK
t
OVSH
t
SHSL
t
SLSH
t
SHOX
t
SLIV
Table 20-1.
Serial Programming Characteristics, T
A = -40°C to 85°C, VCC = 2.7V - 4.0V (Unless Otherwise Noted)
Symbol
Parameter
Min
Typ
Max
Units
1/tCLCL
Oscillator Frequency
3
16
MHz
tCLCL
Oscillator Period
62.5
ns
tSHSL
SCK Pulse Width High
8 tCLCL
ns
tSLSH
SCK Pulse Width Low
8 t
CLCL
ns
tOVSH
MOSI Setup to SCK High
tCLCL
ns
tSHOX
MOSI Hold after SCK High
2 tCLCL
ns
tSLIV
SCK Low to MISO Valid
10
16
32
ns
tERASE
Chip Erase Instruction Cycle Time
500
ms
tSWC
Serial Byte Write Cycle Time
64 tCLCL + 400
µs
21. Absolute Maximum Ratings*
Operating Temperature.................................. -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
Storage Temperature ..................................... -65°C to +150°C
Voltage on Any Pin
with Respect to Ground .....................................-1.0V to +7.0V
Maximum Operating Voltage ............................................ 6.6V
DC Output Current...................................................... 15.0 mA



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