MAX110EVC32-DIP Maxim Integrated Products, MAX110EVC32-DIP Datasheet - Page 13

• Manufacturer Part Number: MAX110EVC32-DIP
• Description: EVAL KIT FOR MAX110
• Manufacturer: Maxim Integrated Products

Specifications of MAX110EVC32-DIP

• Number Of Adc's: 1
• Number Of Bits: 14
• Sampling Rate (per Second): 50
• Data Interface: Serial
• Inputs Per Adc: 2 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 4.35mW @ 50SPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX110, MAX111
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The Maxim 80C32 microcontroller (µC) module is
intended for use with this and other Maxim evaluation
kits (EV kits). It contains the 80C32 µC, RS-232 inter-
face, 8kbytes of EPROM, 32kbytes of static RAM, and
address decoding logic. A 40-pin connector mates
with a connector found on Maxim EV kits designed to
interface with the 80C32 module.
____80C32 Module Component List
_________________General Description
C4, C5, C6, C7,
DESIGNATION
C3, C13, C14
C8, C9, C10,
C11, C12
C1, C2
None
None
None
None
IC10
SW1
SW2
RS1
IC1
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
D1
R1
Y1
J1
J2
MAX110 Evaluation System/Evaluation Kit
______________________________________________________________________________________
QTY
2
9
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
1
15pF ceramic capacitors
0.1µF, 50V ceramic capacitors
22µF, 16V radial electrolytic
capacitors
1N4001 diode
40-pin right-angle male connector
DB9 right-angle socket
620Ω resistor
10kΩ, 10-pin, 9-resistor SIP
Power switch
Reset switch
80C32
MAX233CPP
27C64
74HCT573
74HCT139
74HCT08
74HCT245
62256
78M05
MAX707CPA
11.059MHz crystal
2-pin power connector
28-pin 600-mil socket for IC3
(the EPROM)
Rubber feet
3.00" x 5.50" PC board
80C32 Module
DESCRIPTION
The module is connected to an IBM-compatible
personal computer over a serial communications port.
Software provided with each EV kit runs on the
computer and controls the unit consisting of the 80C32
module and EV kit. The program uses a routine stored
in the 27C64 EPROM to download special 80C32 code
for each kit. The downloaded code controls the EV kit
and, together with the program running on the person-
al computer, displays the output data.
The board operates from a single 8V to 22V supply.
Both the pre-regulated and regulated +5V levels are
available to the EV kit through the 40-pin connector.
The Maxim 80C32 module requires an input of 8V to 22V
for normal operation. An on-board 78M05 power regula-
tor supplies the 5V required for the logic on the module,
and any 5V requirements for the EV kit attached to the
40-pin connector. The pre-regulated voltage is also
available on the data connector. The source must be
capable of supplying 100mA for the module and meet-
ing the load requirements of the EV kit.
A MAX707 on the module monitors the 5V logic supply,
generates the power-on reset, and produces a reset
pulse whenever the reset button is pressed. A watch-
dog function was not included because they frequently
interfere while debugging programs, and debugging is
a prime function of this board.
The 80C32 is a member of the popular Intel 8051 family
of µCs. It is a low-power CMOS version that requires
external ROM for program storage, 256 bytes of inter-
nal RAM, and four 8-bit I/O ports. Three of the ports are
required by the system for serial communications and
memory control. The fourth port (P1) is available
through the data connector.
The 80C32 communicates with the PC over a serial
RS-232 link. A MAX233 acts as a level shifter between
the ±15V RS-232 signals and the TTL levels of the
80C32. The MAX233 also generates the output
voltages necessary to drive RS-232 lines.
Port 0 (pins 32–39) of the 80C32 multiplexes the lower
eight bits of memory address and the eight bits of
read/write data. The lower eight bits of address data
are latched during each I/O cycle by the 74HCT573
octal latch. The latch is controlled by the address latch
enable (ALE) signal of the 80C32. Port 2 (pins 21–28) of
the 80C32 supplies the upper eight bits of address
information.
80C32 Module Power Supply
Microprocessor Supervisor
80C32 Microcontroller
13