Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1706 of 1823
Jul 31, 2019
RX23W Group 50. Flash Memory (FLASH)
50.8.3 Boot Mode (FINE Interface)
The flash memory can be programmed and erased using the FINE in boot mode (FINE interface). The user area and data
area can be rewritten.
Contact the manufacturer for details on the serial programmer.
50.8.3.1 Operating Conditions in Boot Mode (FINE Interface)
FINE is used to communicate with the serial programmer in boot mode (FINE Interface).
Figure 50.27 shows an Example of Pin Connections in Boot Mode (FINE Interface). Table 50.12 lists Pin Handling in
Boot Mode (FINE Interface).
An example of pin connections shown in
Figure 50.27 is a simplified circuit. Operations are not guaranteed in all
systems.
Figure 50.27 Example of Pin Connections in Boot Mode (FINE Interface)
Note 1. Maintain the input level for 2 ms or longer after a reset is released.
Table 50.12 Pin Handling in Boot Mode (FINE Interface)
Pin Name Name I/O Function
VCC, VSS Power supply — Input 1.8 V or higher to the VCC pin.
Input 0 V to the VSS pin.
VCL Decoupling capacitor connect
pin
— Connect to the VSS pin via a decoupling capacitor for stabilizing
the internal voltage.
MD/FINED Operating mode control/data
I/O
I/O Connect to the VCC pin via a resistor (pull up).
PC7/UB Operating mode control Input Input low.*
1
RES# Reset input Input Reset pin. Connect to the reset circuit.
MCU
VCC
RES#
UB
VCL
MD/FINED
VSS
Reset circuit
(User logic)
Data I/O

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English