DS2251T-32-16 Maxim Integrated Products, DS2251T-32-16 Datasheet - Page 11

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DS2251T-32-16

Manufacturer Part Number
DS2251T-32-16
Description
IC MICROCNTRLR 32K 16MHZ 72-SIMM
Manufacturer
Maxim Integrated Products
Series
DS225xr
Datasheet

Specifications of DS2251T-32-16

Core Processor
8051
Core Size
8-Bit
Speed
16MHz
Connectivity
SIO, UART/USART
Peripherals
Power-Fail Reset, WDT
Number Of I /o
32
Program Memory Type
SRAM
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
72-SIMM
Processor Series
DS2251T
Core
8051
Data Bus Width
8 bit
Program Memory Size
32 KB
Data Ram Size
32 KB
Interface Type
UART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
32
Number Of Timers
2
Operating Supply Voltage
4.75 V to 5.25 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
No
AC CHARACTERISTICS—EXPANDED BUS MODE TIMING SPECIFICATIONS
(continued)
(V
EXPANDED PROGRAM MEMORY READ CYCLE
19
20
21
22
23
24
25
26
27
#
CC
= 5V ±10%, T
PARAMETER
ALE Low to Valid Data In
Valid Address to Valid Data
In
ALE Low to
Address Valid to
Data Valid to
Data Valid to
Data Valid after
RD
RD
Low to Address Float
or
WR
High to ALE High
RD
WR
WR
WR
A
or
RD
Going Low
High
= 0˚C to +70˚C.)
WR
High
or
WR
Low
Low
At 12MHz
At 16MHz
At 12MHz
At 16MHz
At 12MHz
At 16MHz
SYMBOL
11 of 22
t
t
t
t
t
t
t
t
RDHALH
ALLRDL
t
DVWRH
WRHDV
DVWRL
MIN
AVRDL
ALLVD
RDLAZ
AVDV
7t
4t
7t
3t
t
t
t
CLK
CLK
CLK
CLK
CLK
MAX
CLK
CLK
- 60
- 150
- 50
- 40
-130
- 90
-50
9t
9t
8
3t
8t
t
CLK
UNITS
CLK
CLK
CLK
CLK
CLK
0
- 150
+ 50
- 165
- 105
+ 50
- 90
ns
ns
ns
ns
ns
ns
ns
ns
ns

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