DS2252T-64-16# Maxim Integrated Products, DS2252T-64-16# Datasheet - Page 4

• Manufacturer Part Number: DS2252T-64-16#
• Description: IC MCU 64KB 16MHZ 40-SIMM
• Manufacturer: Maxim Integrated Products
• Series: DS225xr

Specifications of DS2252T-64-16#

• 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: 64K 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: 64 KB
• Data Ram Size: 64 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

PIN ASSIGNMENT
PIN DESCRIPTION
PIN
1, 3, 5, 7, 9,
10
4, 6, 8, 10,
12, 14, 16,
40, 38, 36,
34, 32, 30,
1
2
3
4
5
6
7
8
9
11, 13, 15
28, 26
PIN
18
19
21
23
25
27
29
31
33
NAME
P1.0
P1.1
P0.0
P1.2
P0.1
P1.3
P0.2
P1.4
P0.3
V
CC
P0.0 - P0.7. General purpose I/O Port 0. This port is open-drain and cannot drive a
logic 1. It requires external pullups. Port 0 is also the multiplexed Expanded
Address/Data bus. When used in this mode, it does not require pullups.
P1.0 - P1.7. General purpose I/O Port 1.
P2.0 - P2.7. General purpose I/O Port 2. Also serves as the MSB of the Expanded
Address bus.
P3.0 RXD. General purpose I/O port pin 3.0. Also serves as the receive signal for the
on board UART. This pin should NOT be connected directly to a PC COM port.
P3.1 TXD. General purpose I/O port pin 3.1. Also serves as the transmit signal for the
on board UART. This pin should NOT be connected directly to a PC COM port.
P3.2
Interrupt 0. This pin is also connected to the
Clock.
P3.3
Interrupt 1.
P3.4 T0. General purpose I/O port pin 3.4. Also serves as the Timer 0 input.
P3.5 T1. General purpose I/O port pin 3.5. Also serves as the Timer 1 input.
P3.6
bus operation.
P3.7
bus operation.
INT0
INT1
WR
RD
. General purpose I/O port pin. Also serves as the read strobe for Expanded
PIN
. General purpose I/O port pin. Also serves as the write strobe for Expanded
. General purpose I/O port pin 3.3. Also serves as the active low External
11
12
13
14
15
16
17
18
19
20
. General purpose I/O port pin 3.2. Also serves as the active low External
P3.0/RXD
NAME
P1.5
P0.4
P1.6
P0.5
P1.7
P0.6
RST
P0.7
SDI
4 of 16
DESCRIPTION
PIN
22
26
28
29
21
23
24
25
27
30
INTP
P3.1/TXD
P3.2/
P3.3/
P3.4/T0
P3.5/T1
NAME
PROG
ALE
P2.7
P2.6
P2.5
output of the DS1283 Real Time
INT0
INT1
PIN
31
32
33
34
35
36
37
38
39
40
P3.6/
P3.7/
XTAL2
XTAL1
NAME
GND
P2.4
P2.3
P2.2
P2.1
P2.0
WR
RD