Holtek HT48R05A-1, Handbook, Page: 95 / 125

HT-ICE Interface Card Settings
The HT-ICE interface card (CPCB48E000004A) as shown below, is a PCB used to connect the
HT-ICE emulator to the user
¢
s target board. It has the following functions:
·
External clock source
·
MCU socket pin assignment
The external clock source has two modes, RC and Crystal. If a crystal clock is to be used, posi-
tions 2 and 3 should be shorted on J2 and a suitable crystal inserted into location Y1. Otherwise, if
an RC clock is to be used, positions 1 and 2 should be shorted and the system frequency adjusted
using VR1. Refer to the Tools/Mask Option Menu of the HT-IDE3000 User
¢
s Guide for the clock
source and system frequency selection.
The J1 connector provides the I/O port connections as well as other pins. The DIP switch, SW1,
should be set according to which device is selected and in accordance with the following table:
Part No. Package Socket
SW1
1 2 3 4 5 6 7 8
HT48R05A-1/HT48C05
HT48R06A-1/HT48C06
HT48R08A-1/HT48C08 16SSOP U4
OFF OFF ON OFF ON OFF OFF
¾
18DIP/SOP U5
HT48R07A-1/HT48C07
HT48R09A-1/HT48C09 24SKDIP/
SOP/SSOP
U1
The pin assignments in locations U1, U4 and U5 are defined so as to match the datasheet pin
assignments. The interface card VME connectors directly interface to the CON1 and CON2 con-
nectors on the HT-ICE.
88
Cost-Effective I/O Type MCU
U 1
U 2
U 3
U 5
U 6
U 8
U 4
J 1
S W 1
J 2
J 3
V R 1
Y 1
C O N 1 C O N 2