MC68HC58 Motorola, MC68HC58 Datasheet - Page 17

• Manufacturer Part Number: MC68HC58
• Description: Data Link Controller
• Manufacturer: Motorola

2.1 MC68HC58 DLC Parallel Mode
MC68HC58
TECHNICAL DATA
The MC68HC58 DLC is available in a 28-pin plastic leaded chip carrier (PLCC) pack-
age and a 28-pin small outline integrated circuit (SOIC) package. The MC68HC58 is
pin configurable to communicate with a host MCU via a serial or parallel interface. Se-
rial or parallel mode is selected by connecting the PRLMD pin to ground or V
spectively. Pin function and recommended interconnections are discussed in the
following paragraphs. Refer to APPENDIX B MECHANICAL DATA AND ORDERING
INFORMATION for information on package dimensions and ordering information.
When the PRLMD pin is tied to V
MCU via a parallel interface. Interface timing is based on the M6800 external bus clock
signal (ECLK). Motorola M68HC11, M68HC16, and M68300 series MCUs have ECLK
outputs, but any host MCU that meets the timing specification can be used.
Figure 2-1 is a pinout of the MC68HC58 (PLCC).
SECTION 2SIGNAL AND PIN DESCRIPTIONS
Figure 2-1 MC68HC58 DLC Pin Assignments
*(SIMO)/ADDR0
*(SCLK)/ECLK
*(SOMI)/R/W
* () INDICATES PIN ASSIGNMENTS FOR SERIAL MODE OPERATION
RST
V
INT
CS
DD
SIGNAL AND PIN DESCRIPTIONS
DD
, the MC68HC58 DLC communicates with the host
(TOP VIEW)
DLC
V
PSEN
V
BUS
LOAD
V
DATA0
CC
BATT
SSD
DLC PIN ASSIGNMENT
MOTOROLA
DD
re-
2-1