ATDH40D208- Atmel, ATDH40D208- Datasheet - Page 4

• Manufacturer Part Number: ATDH40D208-
• Description: MCU, MPU & DSP Development Tools ADAPTER FOR AT40K EMULATION KIT
• Manufacturer: Atmel

Specifications of ATDH40D208-

• Interface Type: Parallel Port
• Operating Supply Voltage: 9 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Daughter Board Layout Example – ATDH40D84
Power Configuration
Power for the motherboard can come from two sources. It
can be supplied by either the jack inputs J1 and J2, or by a
9V power input P1. The source that will drive the mother-
board is determined by switch SW3. Power supplied by the
jacks uses the external setting. Power supplied by the
9V source uses the internal setting. Voltage on the
motherboard for the latter setting is regulated by switch
SW2. LV parts use the 3.3V setting while the rest use the
5.0V setting. The LED L1 will light up only when power is
correctly supplied to VCC. Table 3 lists the possible
configurations. AT40KAL and AT94KAL devices must use
3.5V power setting.
Table 3. Motherboard Power Distribution
4
SW1
Off
On
On
On
SW2
3.3V
5.0V
X
X
ATDH40M/D
External
Internal
Internal
SW3
X
Voltage
0.0V (no power)
Variable
3.3V for
AT40KAL/AT94KAL
5.0V for
AT40K
Program/Boot Settings
Switches SW4 and SW5 determine the program and boot
settings for the ATDH40M. They are located on the bottom
left corner. Table 4 lists the switch combinations and their
effects. SW4 controls the SEREN signal line of the mother-
board to the 2:1 multiplexer (device U3) and the AT17
(device U1). SW% connects signal D0 from the PSLI
device to either the AT17 configuration memory device only
(down) or to the PC interface (up).
Table 4. Programming Modes
Down
SW4
Up
Up
Down
SW5
Up
Up
Effect
Program in Slave Serial from PC
Program AT17 Configuration Memory
Program in Master Serial from AT17