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32186 Datasheet(PDF) 906 Page - Renesas Technology Corp

Part # 32186
Description  MCU
PDF  1032 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32186 Datasheet(HTML) 906 Page - Renesas Technology Corp

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JTAG
21
21-12
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
21.6 Notes on Board Design when Connecting JTAG
21.6 Notes on Board Design when Connecting JTAG
To materialize fast and highly reliable communication with JTAG tools, make sure wiring lengths of JTAG
pins are matched during board design.
M32R/ECU
JTDI
JTMS
JTCK
JTRST
User board
JTAG tool
Make sure wiring lengths are the same, and avoid bending wires as much as possible.
Be careful not to use through-holes within the wiring.
JTDO
33
Ω
33
Ω
VCCE(5V)
33
Ω
33
Ω
2K
Ω
10K
Ω
10K
Ω
0.1µF
SDI connector (JTAG connector)
Power
TDI
TMS
TCK
TRST
TDO
GND
Note 1: The RESET# related circuit and resistance-capacitance values must be determined depending on
the user board's system design conditions and the microcomputer's operating conditions.
Note 2: N-channel open-drain output is recommended for the RESET output of JTAG tools. For details, see JTAG tool specifications.
Notes: • Only if the JTRST pin is firmly tied to ground, the JTDO, JTDI, JTMS and JTCLK pins can be processed by either pullup or pulldown.
• Each of these pins must always be processed even when not using JTAG tools.
The same pullup/pulldown resistance values as when using JTAG tools may be used.
RESET#
(Note 1)
RESET
(Note 2)
33
Ω
10K
Ω
VSS
33
Ω
10K
Ω
10K
Ω
Figure 21.6.1 Notes on Board Design when Connecting JTAG Tools



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