ds2251t Maxim Integrated Products, Inc., ds2251t Datasheet - Page 9

• Manufacturer Part Number: ds2251t
• Description: Ds2251t 128k Soft Microcontroller Module
• Manufacturer: Maxim Integrated Products, Inc.

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………...-0.3V to (V
Voltage Range on V
Operating Temperature Range………………………………………………………………-40°C to +85°C
Storage Temperature (Note 1)……………………………………………………………..-55°C to +125°C
Soldering Temperature………………………………………………………………+260°C for 10 seconds
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the
operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of
time may affect reliability.
Note 1: Storage temperature is defined as the temperature of the device when V
the contents of SRAM are not battery backed and are undefined.
DC CHARACTERISTICS
(V
PARAMETER
Input Low Voltage
Input High Voltage
Input High Voltage RST, XTAL1
Output Low Voltage
at I
Output Low Voltage
at I
BA13:BA0, BD7:BD0, R/W, PE3:PE4)
Output High Voltage
at I
Output High Voltage
at I
PE3:PE4)
Input Low Current
V
Transition Current; 1 to 0
V
Input Leakage Current
0.45 < V
RST Pulldown Resistor
Power-Fail Warning Voltage
Minimum Operating Voltage
Operating Current at 16MHz
PF
VRST
PROG
CC
IN
IN
, BA13:BA0, BD7:BD0, R/W,
OL
OL
OH
OH
= 0.45V (Ports 1, 2, 3)
= 2.0V (Ports 1, 2, 3)
= 5V ±10%, T
= 1.6mA (Ports 1, 2, 3,
= 3.2mA (Ports 0, ALE,
= -80µA (Ports 1, 2, 3)
= -400µA (Ports 0, ALE,
Pullup Resistor
Pullup Resistor
IN
< V
CC
(Port 0)
CC
Relative to Ground………………………………………………….-0.3V to +6.0V
A
= 0˚C to +70˚C.)
PF
PSEN
PSEN
)
PROG
,
,
SYMBOL
V
V
V
V
V
V
CC(MIN)
V
V
R
R
R
V
I
I
I
I
PFW
OH1
OH2
CC
OL1
OL2
TL
9 of 22
IH1
IH2
IL
IL
VR
RE
PR
IL
MIN
4.25
4.00
-0.3
2.0
3.5
2.4
2.4
40
TYP
0.15
0.15
4.37
4.12
4.8
4.8
4.7
40
CC
V
V
= 0V and V
MAX
CC
CC
+0.8
-500
0.45
0.45
4.50
4.25
±10
150
-50
45
+0.3
+0.3
UNITS
LI
mA
µA
µA
µA
kΩ
kΩ
kΩ
= 0V. In this state
V
V
V
V
V
V
V
V
V
CC
NOTES
+ 0.5V)
1, 7
1
1
1
1
1
1
1
1
2