DS2250-32-16+ Maxim Integrated Products, DS2250-32-16+ Datasheet - Page 14

• Manufacturer Part Number: DS2250-32-16+
• Description: IC MCU 32KB 16MHZ 40-SIMM
• Manufacturer: Maxim Integrated Products
• Series: DS225xr

Specifications of DS2250-32-16+

• 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): 4.75 V ~ 5.25 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-SIMM
• Processor Series: DS2250
• Core: 8051
• Data Bus Width: 8 bit
• Program Memory Size: 32 KB
• Data Ram Size: 32 KB
• Interface Type: 3-Wire, RS-232, 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

AC CHARACTERISTICS—PARALLEL PROGRAM LOAD TIMING
(V
*
Second set of numbers refers to expanded memory programming up to 32kbytes.
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
#
CC
= 5V ±5%, T
PARAMETER
Oscillator Frequency
Address Setup to
Address Hold after
Data Setup to
Data Hold after
P2.7, 2.6, 2.5 Setup to V
V
V
Data Output from Address Valid
Data Output from P2.7 Low
Data Float after P2.7 High
Delay to Reset/
Reset/
V
V
Verify Active Time
PROG
PP
PP
PP
PP
Setup to
Hold after
High
Inactive (Between Program Cycles)
PSEN
Width Low
Active (or Verify Inactive) to
PROG
PROG
PROG
A
PSEN
PROG
= 0°C to +70°C.)
PROG
PROG
Low
Low
Active after Power On
Low
High
PP
Low
High
14 of 18
SYMBOL
t
t
t
t
t
t
t
t
1/t
t
t
t
t
VPHPRL
PRHVPL
t
P27HVP
DVP27L
P27HDZ
AVPRL
PRHAV
DVPRL
PRHDV
RAVPH
PORPV
t
VPPPC
AVDV
t
PRW
VFT
CLK
21504
2400*
MIN
2400
1200
1200
1.0
48
0
0
0
0
0
0
0
0
1800*
1800*
1800*
MAX
12.0
48
48
48
UNITS
MHz
t
t
t
t
t
t
t
t
CLK
CLK
CLK
CLK
CLK
CLK
CLK
CLK