UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 837

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

27.3 Connection Circuit Examples
system.
Figure 27-2. Connection Example of QB-78K0MINI or QB-MINI2 and 78K0/Dx2 (When X1 and X2 Are Used)
The following are examples of circuits required when connecting the QB-78K0MINI or QB-MINI2 to the target
Notes 1. This connection is designed assuming that the reset signal is output from the N-ch open-drain buffer
Cautions 1. Input the clock from the X1 pin during on-chip debugging.
2. Make pull-down resistor 470
3. Characters without parentheses represent the QB-78K0MINI name, and those within parenthesis the
2. Control the X1 and X2 pins by externally pulling down the P31 pin.
(output resistance: 100
MINI2 User’s Manual (U18371E).
QB-MINI2 name.
Target connector
(10-pin)
X2 (DATA)
RESET_IN
RESET_OUT
X1 (CLK)
FLMD0
R.F.U.
R.F.U.
GND
GND
Note 3
Note 3
V
Note 1
DD
(Open)
(Open)
CHAPTER 27 ON-CHIP DEBUG FUNCTION
V
or less). For details, refer to QB-78K0MINI User’s Manual (U17029E) or QB-
DD
Preliminary User’s Manual U19748EJ1V0UD
(Recommended)
or more (10 k : recommended).
10 k
Note 2
Note 2
V
DD
1 k
(Recommended)
V
DD
Reset circuit
X2
GND
Target device
RESET
V
X1
P31
FLMD0
Reset signal
DD
835