DS80C320-ECG+ Maxim Integrated Products, DS80C320-ECG+ Datasheet - Page 3
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DS80C320-ECG+
Manufacturer Part Number
DS80C320-ECG+
Description
IC MCU HI SPEED 25MHZ 44-TQFP
Manufacturer
Maxim Integrated Products
Series
80Cr
Datasheet
1.DS80C323-QND.pdf
(38 pages)
Specifications of DS80C320-ECG+
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SIO, UART/USART
Peripherals
Power-Fail Reset, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
DS80C320
Core
8051
Data Bus Width
8 bit
Program Memory Size
64 KB
Data Ram Size
64 KB
Interface Type
UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
4.25 V to 5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
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
Figure 1. Block Diagram
PIN DESCRIPTION
DIP
18
19
29
40
20
9
PLCC
22, 23
20
21
44
10
32
PIN
TQFP
16, 17
38
14
15
26
4
XTAL2
XTAL1
NAME
GND
RST
PSEN
V
CC
+5V (+3V for DS80C323)
Digital Circuit Ground
Reset Input. The RST input pin contains a Schmitt voltage input to
recognize external active-high reset inputs. The pin also employs an
internal pulldown resistor to allow for a combination of wired OR
external reset sources. An RC is not required for power-up, as the device
provides this function internally.
Crystal Oscillator Pins. XTAL1 and XTAL2 provide support for
parallel-resonant, AT-cut crystals. XTAL1 acts also as an input in the
event that an external clock source is used in place of a crystal. XTAL2
serves as the output of the crystal amplifier.
Program Store-Enable Output, Active Low. This signal is commonly
connected to external ROM memory as a chip enable.
active-low pulse width of 2.25 XTAL1 cycles with a period of four
XTAL1 cycles.
accessed through the bus and during a reset condition.
DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
3 of 38
PSEN
is driven high when data memory (RAM) is being
DS80C320/
DS80C323
FUNCTION
PSEN
provides an