R0E00008AKCE00EP52 Datasheet, PDF (13/43 Pages) Renesas Technology Corp – Microcomputer Development Environment System

E8a Emulator
4. Examples of Pin Handling for Connecting the E8a
Vcc
SCLK
RxD
TxD
BUSY
EPM
CE
Vcc1 Vcc1 Vcc1 Vcc2 Vcc2
Pulled up at 4.7kΩ to 22kΩ
Pulled up at 4.7kΩ or more
Pulled up at
4.7kΩ or more
P65 [*1]
P66
P67
P64 [*1]
P55 [*2]
P50
MCU
CNVss
Vcc1
CNVss
RESET#
User
*
logic
RESET#
Vss
Pulled up at
4.7kΩ or more
Pulled down at
4.7kΩ or more
E8a Connecting
Connector
*: Open-collector buffer
User system
Figure 4.4 Example of an E8a Connection
(Dual Power Supply and Memory Expansion Mode, R32C/111 (100-pin) Only)
Notes
[*1] For details on setting pins P64 and P65, refer to “(1) SCLK, RxD, TxD and BUSY pins” on page 14.
[*2] The HOLD# signal cannot be used. Pull up P55 on the user system.
REJ10J1877-0201 Rev.2.01 Jun. 26, 2009
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