LC86F3448B

No.A0120-10/21

Pins

Options

Condition during and on release of reset

Input: Without pull-up MOS transistor

Output: N-channel open drain

Output -off

Input mode: High impedance

P0

Input: With pull-up MOS transistor

Output: CMOS

Output-off

Flash version: During reset and in the first few hundred µs after reset

is released, the pull-up MOS transistor is OFF. Thereafter, set to

input mode with pull-up MOS Tr. ON

Mask version: During reset the pull-up MOS transistor is OFF.

After soon, set to input mode with pull-up MOS Tr. ON

Input: With programmable pull-up MOS transistor

Output: N-channel open drain

P1

Input: With programmable pull-up MOS transistor

Output: CMOS

Output-off

Input mode: High impedance

P3

No options

Input: With programmable pull-up MOS transistor

Output: CMOS

Output -off

Input mode: High impedance

P7

No options

Input: With programmable pull-up MOS transistor

Output: With pull-up MOS (P70)

CMOS (P71 to P73)

Output-off

Input mode: High impedance

On-board writing system

The LC86F3448B has the On-board writing system. The program is renewable by using SANYO Flash On-board

System after the LSI has been installed on the application board.

This system is composed of 4 types divided by the combination of mode setting pin and communication pin.

Each type system has to connect the 6 pins (VDD, VSS, RES, communication pins) with the interface board of SANYO

Flash On-board System.

It is necessary that the pins to be used for the rewriting system should be able to be separated from the application board

properly.

The system type is selected by the option setting program (Su86K.exe).

types

mode setting pin

communication pins

type1

RES pin (high voltage (12V) applied)

P30(DATA1), P31(DATA0), P32(CLK)

type2

RES pin (high voltage (12V) applied)

P30(DATA1), P11(DATA0), P10(CLK)

type3

P30 pin (High level voltage (5V) applied)

P30(ENA/DATA1), P31(DATA0), P32(CLK)

type4

P30 pin (High level voltage (5V) applied)

P30(ENA/DATA1), P11(DATA0), P10(CLK)

• Type 3 or 4 is selected : P30 is exclusive for the on-board system. This pin must always be pulled-down, so

this pin can’t be used for other applications.

• The loader program must be written into the ROM to use On-board writing system.

The loader program should be written into the ROM before the LSI has been installed on the board by the general

purpose PROM programs.

When the option setting selects the this system to use, the loader program automatically links on the user program

linking.

Please ask to our sales persons before using On-board writing system.