UPD78F9500MA-CAC-A Datasheet, PDF (282/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

CHAPTER 17 ON-CHIP DEBUG FUNCTION
17.1 Connecting QB-MINI2 to 78K0S/KU1+
The 78K0S/KU1+ uses RESET, X1^{Note 1}, X2 ^{Note 2}, INTP1, VDD, and GND pins to communicate with the host machine
via an on-chip debug emulator (QB-MINI2).
<R> Notes 1. μPD78F920x: X1/P23/ANI3, μPD78F950x: EXCLK/P23
<R>
2. μPD78F920x: X2/P22/ANI2, μPD78F950x: P22
<R> Caution The 78K0S/KU1+ has an on-chip debug function, which is provided for development and
evaluation. Do not use the on-chip debug function in products designated for mass production,
because the guaranteed number of rewritable times of the flash memory may be exceeded when
this function is used, and product reliability therefore cannot be guaranteed. NEC Electronics is
not liable for problems occurring when the on-chip debug function is used.
Target connector
GND ¹
RESET_OUT ²
DATA ³
VDD ⁴
DATA ⁵
R.F.U. ⁶
R.F.U. ⁷
H/S^{Note 4 8}
9
CLK
10
R.F.U.
11
R.F.U.
12
INTP
13
R.F.U.
14
CLK
15
RESET_IN
16
R.F.U.
Figure 17-1. Recommended Circuit Connection
VDD
Note 3
Note 3
VDD
3 to 10 kΩ
VDD
1 kΩ
10 kΩ
VDD
1 kΩ
Target device
RESET^{Note 1}
X2^{Note 2}
μPD78F920x: X2
μPD78F950x: P22
VDD
VDD
X1^{Note 2}
μPD78F920x: X1
VSS
μPD78F950x: EXCLK
INTP1^{Note 5}
1 to 10 kΩ
Reset circuit
RESET signal
Caution The constants described in the circuit connection example are reference values. If you
perform flash programming aiming at mass production, thoroughly evaluate whether the
specifications of the target device are satisfied.
Note
1. The RESET pin is used to download the monitor program at debugger startup or to implement
forced reset. Therefore, a pin that alternately functions as the RESET pin cannot be used. For
reset pin connection, refer to QB-MINI2 User’s Manual (U18371E).
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User’s Manual U18172EJ3V0UD