MAX110EVC32-DIP Maxim Integrated Products, MAX110EVC32-DIP Datasheet - Page 14

• 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 port 3 pins (10–17) provide several unrelated
functions. Pins 10 and 11 are used as the receive data
(RxD) and transmit data (TxD) pins of the RS-232 link.
Pins 16 and 17 act as the write (WR) and read (RD)
control signals for the data I/O cycles. Four other pins
are configured as interrupt and timer controls, but are
not used on this board.
The board has a 27C64 EPROM containing code for
initializing the 80C32 and downloading additional
program code to the 62256 RAM. After a reset, the
EPROM resident code initializes the 80C32, determines
the address range of the RAM, sets the RS-232 baud
rate to 1200, and waits for communications from the
PC. Receiving any character will prompt the program to
send an initial banner that includes the program name,
revision level, and boundaries of the on-board RAM.
The 62256 CMOS (32kbyte) static RAM is used to hold
program code for the various Maxim EV kits that use
the 80C32 module as the controller. Programs are
transferred from disk to the RAM using software run-
ning on a personal computer, such as MAXLOAD or
other programs provided with Maxim EV kits. Programs
written to execute from this RAM start at 4000 (HEX)
and are typically less than 4kbytes long. The remaining
RAM is available for data storage.
Logic on the module board generates various enable
signals for different address ranges. The ROM and
RAM enable signals are fed directly to the respective
chips. Several additional signals (CS0–CS3) are
available on the data connector to be used by Maxim
EV kits. Table 11 outlines the address range for each of
the elements found on the 80C32 module.
MAX110 Evaluation System/Evaluation Kit
14
Table 11. Address Ranges in Hexadecimal
ADDRESS RANGE (HEX)
______________________________________________________________________________________
0000
4000
C000
D000
E000
F000
➔
➔
➔
➔
➔
➔
3FFF
BFFF
CFFF
DFFF
EFFF
FFFF
Address Ranges
ENABLE SIGNAL
ROM
RAM
CS0
CS1
CS2
CS3
Memory
A 40-pin connector mounted on the edge of the printed
circuit board provides connection between the µC
module and other Maxim EV kits. Both power and digi-
tal signals are transferred via the connector. To join the
module board with an EV kit, carefully align and insert
the pins on the connector with the mating 40-pin
female connector of the kit. The pin functions are listed
in Table 12.
Software for EV kits using the Maxim 80C32 module is
divided into three elements: the interface program run-
ning on an IBM-compatible PC, a module program
located in EPROM, and a program supplied on disk
that is transferred to the RAM located on the module.
The EPROM resident program initializes the 80C32,
establishes communications over the RS-232 link, veri-
fies the static RAM, and downloads other programs. Its
operation starts on power-up and whenever the reset
button is pressed. After reset, the program waits indefi-
nitely to receive a character over the RS-232 port. When
the first character is received, a logon banner identifying
the module and firmware revision is transmitted.
Table 12. I/O Connector Pin Functions
15–18
19–26
27–34
35–40
PIN
1–4
5, 6
7, 8
10
11
12
13
14
9
Pre-regulator input
ADDR0–ADDR3
Regulated +5V
FUNCTION
P1.0–P1.7
DB0–DB7
Reserved
Ground
CS0
CS1
CS2
CS3
WR
RD
EPROM Resident Program
Software Architecture
Data I/O Connector
Read strobe
Write strobe
Address C000–CFFF
Address D000–DFFF
Address E000–EFFF
Address F000–FFFF
Lowest 4 bits of address
8-bit data bus
8 bits of port 1
DESCRIPTION