DS2252T-128-16# Maxim Integrated Products, DS2252T-128-16# Datasheet - Page 7
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DS2252T-128-16#
Manufacturer Part Number
DS2252T-128-16#
Description
IC MCU 128KB 16MHZ 40-SIMM
Manufacturer
Maxim Integrated Products
Series
DS225xr
Datasheet
1.DS2252T-64-16.pdf
(16 pages)
Specifications of DS2252T-128-16#
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
128K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
40-SIMM
Processor Series
DS2252T
Core
8051
Data Bus Width
8 bit
Program Memory Size
128 KB
Data Ram Size
128 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
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
DS2252T MEMORY MAP WITH (PES = 1) Figure 4
POWER MANAGEMENT
The DS2252T monitors V
switchover to lithium backup. It uses an internal band-gap reference in determining the switch points.
These are called V
perform an interrupt vector to location 2Bh if the power-fail warning is enabled. Full processor operation
continues regardless. When power falls further to V
code execution will be performed unless power rises back above V
the R/
drops further to below V
majority of internal circuits will be disabled and the remaining nonvolatile states will be retained. The
Secure Microcontroller User’s Guide has more information on this topic. The trip points V
V
PFW
are listed in the electrical specifications.
W
signal go to an inactive (logic 1) state. V
PARTITION
FFFFh --
C000h --
B000h --
4000h --
0000h --
= NOT ACCESSIBLE
PFW
, V
PROGRAM MEMORY
CCMIN
LI
, internal circuitry will switch to the built-in lithium cell for power. The
CC
PROGRAM
NV RAM
, and V
to provide power-fail reset, early warning power-fail interrupt, and
LI
respectively. When V
7 of 16
CCMIN
CC
is still the power source at this time. When V
, the DS2252T invokes a reset state. No further
DATA MEMORY (MOVX)
CC
REAL-TIME
drops below V
CCMIN
CLOCK
. All decoded chip enables and
PFW
-- 64K
-- 16K
, the DS2252T will
CCMIN
and
CC