NEC PD75P308 user manual PIN Functions, Port Pins

Page 5

μPD75P308

1. PIN FUNCTIONS

1.1 PORT PINS

 

 

Also Served

 

 

 

 

 

Input/

Pin Name

Input/Output

 

Function

8-Bit I/O

When Reset

Output

 

 

As

 

 

 

 

 

Circuit

 

 

 

 

 

 

 

 

 

 

 

TYPE*1

P00

Input

 

INT4

4-bit input port (PORT0)

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P01

Input/Output

 

SCK

 

 

 

F -A

 

Pull-up resistors can be specified in 3-bit

X

Input

 

 

 

 

 

 

 

 

 

P02

Input/Output

SO/SB0

units for the P01 to P03 pins by software.

 

 

 

F -B

 

 

 

 

 

 

 

 

 

 

 

 

P03

Input/Output

SI/SBI

 

 

 

 

 

M -C

 

 

 

 

 

 

 

 

 

 

 

 

P10

 

 

INT0

 

With noise elimination function

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P11

Input

 

INT1

4-bit input port (PORT1)

X

Input

B -C

P12

 

INT2

Internal pull-up resistors can be

 

 

 

 

 

 

 

 

specified in 4-bit units by software.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P13

 

 

TI0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P20

 

PTO0

 

 

 

 

 

 

 

 

 

 

 

 

4-bit input/output port (PORT2)

 

 

 

 

P21

Input/Output

 

—

 

 

 

 

 

Internal pull-up resistors can be

X

Input

E-B

P22

 

PCL

 

 

specified in 4-bit units by software.

 

 

 

 

P23

 

 

BUZ

 

 

 

 

 

 

P30*2

 

LCDCL

MD0

Programmable 4-bit input/output port

 

 

 

 

 

 

 

 

 

 

(PORT3)

 

 

 

 

 

 

SYNC

MD1

 

 

 

 

P31*2

Input/Output

This port can be specified for input/output

X

Input

E-B

P32*2

 

MD2

in bit units.

 

 

 

 

 

 

 

 

Internal pull-up resistors can be

 

 

 

 

P33*2

 

 

MD3

specified in 4-bit units by software.

 

 

 

 

 

 

 

 

 

 

N-ch open-drain 4-bit input/output port

 

 

 

 

 

 

 

 

 

 

(PORT4)

 

 

 

 

P40-43*2

Input/Output

 

—

Data input/output pin for writing and

 

High impedance

M-A

 

 

 

 

 

 

verifying of program memory (PROM)

 

 

 

 

 

 

 

 

 

 

(lower 4 bits)

●

 

 

 

 

 

 

 

 

 

N-ch open-drain 4-bit input/output port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(PORT5)

 

 

 

 

P50-P53*2

Input/Output

 

—

Data input/output pin for writing and

 

High impedance

M-A

 

 

 

 

 

 

verifying of program memory (PROM)

 

 

 

 

 

 

 

 

 

 

(upper 4 bits)

 

 

 

 

P60

 

 

KR0

Programmable 4-bit input/output port

 

 

 

 

 

 

 

 

 

 

(PORT6)

 

 

 

 

P61

 

 

KR1

 

 

 

 

Input/Output

 

This port can be specified for input/output

 

Input

F -A

 

 

 

 

 

 

P62

 

KR2

in bit units.

 

 

 

 

 

 

 

 

 

Internal pull-up resistors can be specified

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P63

 

 

KR3

 

 

 

 

 

 

in 4-bit units by software.

●

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P70

 

 

KR4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4-bit input/output port (PORT7)

 

 

 

 

P71

Input/Output

 

KR5

 

 

 

 

 

 

 

 

 

Internal pull-up resistors can be

 

Input

F -A

P72

 

KR6

 

 

 

specified in 4-bit units by software.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P73

 

 

KR7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP0

 

 

S24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP1

Output

 

S25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP2

 

S26

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP3

 

 

S27

1-bit output port (BIT PORT)

X

*3

 

G-C

 

 

 

 

 

 

 

BP4

 

 

S28

Shared with a segment output pin.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP5

Output

 

S29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP6

 

S30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BP7

 

 

S31

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*1: Circles indicate schmitt trigger inputs.

2:Can directly drive LED.

3:For BP0-7, VLC1 indicated below are selected as the input source.

However, the output level is changed depending on BP0-7 and the VLC1 external circuits.

★

5

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Contents Description FeaturesOrdering Information Quality GradeΜPD75P308 PIN ConfigurationBlock Diagram Contents PIN Functions Port PinsNON Port Pins Input buffer of Cmos standard Schmitt trigger input with hysteresis characteristicsPIN INPUT/OUTPUT Circuits IN/OUT SEG COMType F-B Type M-C Connect capacitor between VDD and P00/INT4, Reset pinEprom Differences Between μPD75P308 and μPD75308+12.5 Write mode Verify mode Program inhibit mode Or H Program memory address 0 clear modeWriting and Verifying Prom Program Memory Operation Modes for WRITING/VERIFYING Program MemoryVDD+1 Program Memory Write ProcedureProgram Memory Read Procedure Erasure μPD75P308K only Absolute Maximum Ratings Ta = 25C Electrical SpecificationsTa = -10 to +70C, VDD = 5 to ±5 Main System Clock Oscillator Circuit CharacteristicsRecommended Oscillation Circuit Constants Main System Clock Ceramic Oscillator Ta = -10 to +70CCapacitance Ta = 25C, VDD = 0 DC Characteristics Ta = -10 to +70C, VDD = 5V ±5% Operation Other Than Serial Transfer AC Characteristics Ta = -10 to + 70C, VDD = 5V ±5%Interrupt mode register IM0 Serial Transfer Operation SBI Mode SCK external clock output master SBI Mode SCK internal clock output masterTI0 Timing AC Timing Test Point excluding X1 and XT1 inputsClock Timing TWO-LINE Serial I/O Mode Serial Transfer Timing THREE-LINE Serial I/O ModeCommand Signal Transfer Serial Transfer Timing BUS Release Signal TransferReset Input Timing Interrupt Input TimingBTM3 BTM2 BTM1 BTM0 Data Retention Timing releasing Stop mode by ResetTa = -10 to +70C Other than X1 or MD0 MD1 Program Memory Write TimingProgram Memory Read Timing PIN Plastic QFP 14×20 Package DrawingsMillimeters Inches PIN Ceramic WqfnVPS Recommended Soldering ConditionsΜPD75P308GF-3B9 80-pin plastic QFP 14 x 20 mm Prom writing tools Appendix A. Development ToolsAppendix B. Related Documents Static Electricity ALL MOS Devices Processing of Unused Pins Cmos Devices onlyStatus Before Initialization ALL MOS Devices Fix the input level of Cmos devicesMemo
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