19-1322; Rev 0; 12/97
68HC16 Module
_____________________________________________68HC16 Module Component List
DESIGNATION
QTY
DESCRIPTION
330kΩ, 5% resistor
10kΩ, 5% resistors
470Ω, 5% resistor
10kΩ SIP resistor
DESIGNATION
C1, C2, C3
QTY
3
DESCRIPTION
1µF ceramic capacitors
R2
R3, R4
R5
R6
SW1
SW2
1
2
1
1
1
1
22µF, 25V radial-lead electrolytic
capacitors
C4, C5
2
C6, C7
C8
C9
C10–C14
D1
2
1
0
5
1
1
1
22pF capacitors
0.01µF capacitor
Reference designator, not used
0.1µF capacitors
1N4001 diode
Slide switch
Momentary pushbutton switch
68HC16 µC
MC68HC16Z1CFC16 (132-pin
plastic quad flat pack)
U1
1
J1
J2
40-pin right-angle male connector
2-circuit terminal block
U2
U3
1
1
Maxim MAX233CPP
27C256 EPROM containing
monitor program
Right-angle printed circuit board
mount, DB9 female socket
J3
1
U4
U5
U6
U7
Y1
None
None
None
None
None
1
1
1
1
1
4
1
1
1
1
7805 regulator, TO-220 size
62256 (32K x 8) static RAM
74HCT245 bidirectional buffer
Maxim MAX707CPA
32.768kHz watch crystal
Rubber feet
28-pin socket for U3
20-pin socket for U6
3" x 5" printed circuit board
Heatsink for U4, thermalloy # 6078
J4
JU1
JU2
JU3
JU4
JU5
L1
L2
LED1
R1
0
0
0
0
0
0
0
0
1
1
Open
Open
Reference designator, not used
Open
Open
Open
Open
Open
Light-emitting diode
10MΩ, 5% resistor
68HC16 Module
________________General Description
68HC16 Module
________________Detailed Description
The 68HC16 module is an assembled and tested print-
ed-circuit board intended for use with Maxim’s high-
speed serial-interface evaluation kits (EV kits). The
module uses an inexpensive 8-bit implementation of
Motorola’s MC68HC16Z1 microcontroller (µC) to collect
data samples at high speed using the QSPI™ interface.
It requires an IBM-compatible personal computer and
an external DC power supply, typically 12V DC or as
specified in EV kit manual.
Power Input Connector J2
The 68HC16 module draws its power from a user-sup-
plied power source connected to terminal block J2. Be
sure to note the positive and negative markings on the
board. A three-terminal 5V regulator allows input voltages
between 8V and an absolute maximum of 20V. The
68HC16 module typically requires 200mA of input current.
68HC16 Microcontroller
U1 is Motorola’s 68HC16Z1 µC. Contact Motorola for µC
information, development, and support. Maxim EV kits use
the high-speed queued serial peripheral interface (QSPI)
and the internal chip-select generation.
Maxim’s 68HC16 module is provided to allow customers
to evaluate selected Maxim products. It is not intended
to be used as a microprocessor development platform,
and such use is not supported by Maxim.
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.
QSPI is a trademark of Motorola Corp.
________________________________________________________________ Maxim Integrated Products
1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
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