Holtek HT48R70A-1 - HT-ICE Interface Card Settings

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
12345678
HT48R10A-1 24SKDIP/SOP U1 OFF OFF ON OFF ON OFF OFF
¾
HT48R30A-1 24/28SKDIP/SOP U2, U3 ON OFF OFF ON OFF OFF OFF
¾
HT48R50A-1 28SKDIP/SOP U3 ON OFF OFF ON OFF OFF ON
¾
HT48R50A-1 48SSOP U6 ON OFF OFF OFF OFF OFF OFF
¾
HT48R70A-1 48SSOP J1 OFF OFF OFF OFF OFF OFF OFF
¾
HT48R70A-1 64QFP J1 OFF OFF OFF OFF OFF OFF OFF
¾
HT48RU80 48SSOP J1 OFF ON OFF OFF OFF ON OFF
¾
HT48RU80 64QFP J1 OFF ON OFF OFF OFF ON OFF
¾
The pin assignments in locations U1 to U8 are defined so as to match the datasheet pin assign
-
ments. The interface card VME connectors directly interface to the CON1 and CON2 connectors
on the HT-ICE. Note that although the U6 socket has only 40-pin, the 48-pin HT48R50A-1 SSOP
device can still interface to it, as 8 pins on this device are unused.
134
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