2 pin functions – Panasonic MN103001G/F01K User Manual

Page 33

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1-7

General Specifications

1.4.2 Pin Functions

Table 1-4-2 shows the function of each pin of this microcontroller.

Table 1-4-2 Pin Function Table (1/2)

Category

Pin name

Input/

Number

Pin Function

Output

of pins

Power supply

VDD

8

Digital system power supply (+3.3 V)

VSS

7

Digital system GND

VDD2(VPP)

1

“VDD2” in the case of the MN103001G, “VPP” in the

case of the MN1030F01K. Connect to 5 V or 3.3 V.

Always input 5 V to VPP when writing.

Clock

OSCI

I

1

Oscillator input (use input of 3.3 V to 0 V amplitude only.)

OSCO

O

1

Oscillator output

(Open when using an external clock input)

SYSCLK

O

1

System clock output (multipurpose)

CKSEL

I

1

Switch for using/not using PLL

PVDD

1

PLL power supply (+3.3 V)

PVSS

1

PLL GND

Address bus

A23 to 0

O

24

Address lines 23 to 0 (multipurpose, A23 also serves as

CS3.)

Data bus

D15 to 0

I/O

16

Data lines 15 to 0 (multipurpose)

Address/

ADM15 to 0

I/O

(16)

Address/Data lines 15 to 0 (A15 to 0 multipurpose)

Data bus

Bus control

MMOD1 to 0

I

2

Mode setting signals

signals

EXMOD1 to 0

I

2

Extension mode setting (multipurpose)

RE

O

1

Memory read signal (multipurpose)

CS3 to 0

O

4

Chip select signals (multipurpose)

WE1 to 0

O

2

Memory write signals (multipurpose)

DK

I

1

Data acknowledge signal (multipurpose)

BG

O

1

Bus authority release signal (multipurpose)

BR

I

1

Bus authority request signal (multipurpose)

CAS

O

(1)

DRAM CAS signals (for 2WE) (multipurpose of A22)

RAS2 to 1

O

(2)

DRAM RAS signal (multipurpose of CS2 to 1)

AS

O

(1)

Address strobe signal (Also serves as D0.)

RWSEL

O

(1)

Read/write select (Also serves as D1.)

DCAS1 to 0

O

(2)

DRAM CAS signal (for 2 CAS)

DWE

O

(1)

DRAM write signal (for 2 CAS)

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