Renesas QB-78K0MINI, Руководство пользователя

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CHAPTER 3 HARDWARE SETTINGS AND FUNCTIONS
User’s Manual U17029EJ3V0UM
18
3.1 Hardware
3.1.1 USB connector
A USB2.0 compliant MINI-B type connector (UX60A-MB-5ST: Hirose Electric Co., Ltd.) is used.
3.1.2 Clock socket for target device
For clock supply to the target device, a 14-pin DIP socket is implemented as CLK1. A 14-pin type oscillator (5 V)
or a parts board that can configure an oscillation circuit can be mounted on the 14-pin DIP socket. The socket
specifications are listed as (a) to (d) below. Also, a parts board mounted as CLK1 is shown in (e) below.
A parts board such as the 160-90-314 (manufactured by PRECI-DIP) can be used with this socket to configure
oscillation circuit. Be sure to use the manufacturer’s recommended values for constants of the capacitors and
resistors to be mounted.
Caution Be sure to turn off the QB-78K0MINI’s power supply before mounting or removing a clock in the
clock socket for the target device. In addition, do not mount a clock in the clock socket when
“System” is selected in the “Main Clock” field in the Configuration dialog box of the debugger.
(a) Equivalent circuit (b) Mounted parts
1 M
Ω
11
4
3
12
CA
CB
13
2
5
10
Rx
9 8
CLOCK OUT
HCU04 HCU04
(c) Parts board (oscillation circuit parts) mount example (d) Pin positions in corresponding clock module
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
CLOCK OUT
GND
NC 1
7
14
8
Top View Top View
Pin No. Connection
2 to 13 Capacitor CB
3 to 12 Capacitor CA
4 to 11 Ceramic resonator/crystal resonator
5 to 10 Resistor R
X
8, 9 Shorted