M38K09RFS datasheet(235/328 Pages) RENESAS

235 / 328 page

2.13 Flash memory

Rev.2.00

Oct 05, 2006

page 106 of 111

38K0 Group

REJ09B0337-0200

APPLICATION

2.13.7 Flash memory mode application examples

The control pin processing example on the system board in the standard serial I/O mode and the control

example in the CPU rewrite mode are described below.

(1)

Control pin connection example on the system board in standard serial I/O mode

As shown in Figure 2.13.4, in the standard serial I/O mode, the built-in flash memory can be rewritten

with the microcomputer mounted on board. Connection examples of control pins (P40/EXDREQ/RXD,

______

____________

P41/EXDACK/TXD, P42/EXTC/SCLK, P43/EXA1/SRDY, P16, CNVSS, and RESET pin) in the standard serial

I/O mode are described below.

Fig. 2.13.4 Rewrite example of built-in flash memory in standard serial I/O mode

RS-232C

M38K09F8FP/HP

M38K09F8LFP/LHP

Serial programmer

Table 2.13.3 shows the setting condition in the standard serial I/O mode.

Table 2.13.3 Setting condition in serial I/O mode

Pin name

CNVSS/VPP (Note)

P16

P42/EXTC/SCLK

____________

RESET

Pin number

38K0 Group flash memory version

Note: CNVSS/VPP is not VCC but a voltage when programming.

4.50 to 5.25 V

VCC

Edge from VSS to VCC

Value

M38K09RFS Datasheet(PDF) 235 Page - Renesas Technology Corp