ATtiny28L Atmel Corporation, ATtiny28L Datasheet - Page 53

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ATtiny28L

Manufacturer Part Number
ATtiny28L
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATtiny28L

Flash (kbytes)
2 Kbytes
Pin Count
28
Max. Operating Frequency
4 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
11
Ext Interrupts
10
Usb Speed
No
Usb Interface
No
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
0.03
Self Program Memory
NO
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
1
32khz Rtc
No
Calibrated Rc Oscillator
Yes
Parallel Programming
Characteristics
1062F–AVR–07/06
Figure 40. Parallel Programming Timing
t
XTAL1
XHXL
t
DVXH
Data & Contol
(DATA, XA0/1, BS)
WR
RDY/BSY
OE
DATA
T
= 25°C ± 10%, V
= 5V ± 10%
A
CC
Symbol
Parameter
V
Programming Enable Voltage
PP
I
Programming Enable Current
PP
t
Data & Control Valid before XTAL1 High
DVXH
t
XTAL1 Pulse Width High
XHXL
t
Data & Control Hold after XTAL1 Low
XLDX
t
XTAL1 Low to WR Low
XLWL
t
BS Valid to WR Low
BVWL
t
BS Hold after RDY/BSY High
RHBX
t
WR Pulse Width Low
WLWH
t
WR Low to RDY/BSY Low
WLRL
t
WR Low to RDY/BSY High
WLRH
t
XTAL1 Low to OE Low
XLOL
t
OE Low to DATA Valid
OLDV
t
OE High to DATA Tri-stated
OHDZ
ATtiny28L/V
t
XLWL
t
t
XLDX
BVWL
t
WLWH
t
WLRL
t
XLOL
t
OLDV
Min
Typ
11.5
67.0
67.0
67.0
67.0
67.0
67.0
67.0
0.0
0.5
0.7
67.0
20.0
t
RHBX
t
WLRH
t
OHDZ
Max
Unit
12.5
V
250.0
µA
ns
ns
ns
ns
ns
ns
ns
2.5
µs
0.9
ms
ns
ns
20.0
ns
53

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