UPD178004A datasheet(35/56 Pages) NEC

Part #	UPD178004A

Description	8-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

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35

µPD178004A, 178006A, 178016A, 178018A

(2) SERIAL INTERFACE (TA = –40 to +85

°C, VDD = 3.5 to 5.5 V)

(a) Serial interface channel 0

(i) 3-wire serial I/O mode (SCK0 ... internal clock output)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

SCK0 cycle time

tKCY1

4.5 V

≤ VDD ≤ 5.5 V

800

ns

3.5 V

≤ VDD < 4.5 V

1 600

ns

SCK0 high-/low-level width

tKH1,

4.5 V

≤ VDD ≤ 5.5 V

tKCY1/2 – 50

ns

tKL1

3.5 V

≤ VDD < 4.5 V

tKCY1/2 – 100

ns

SI0 setup time (to SCK0

↑)tSIK1

4.5 V

≤ VDD ≤ 5.5 V

100

ns

3.5 V

≤ VDD < 4.5 V

150

ns

SI0 hold time (from SCK0

↑)tKSI1

400

ns

SO0 output delay time from SCK0

↓

tKSO1

C = 100 pF Note

300

ns

Note

C is the load capacitance of SO0 output line.

(ii) 3-wire serial I/O mode (SCK0 ... external clock input)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

SCK0 cycle time

tKCY2

4.5 V

≤ VDD ≤ 5.5 V

800

ns

3.5 V

≤ VDD < 4.5 V

1 600

ns

SCK0 high-/low-level width

tKH2,

4.5 V

≤ VDD ≤ 5.5 V

400

ns

tKL2

3.5 V

≤ VDD < 4.5 V

800

ns

SI0 setup time (to SCK0

↑)tSIK2

100

ns

SI0 hold time (from SCK0

↑)tKSI2

400

ns

SO0 output delay time from SCK0

↓

tKSO2

C = 100 pF Note

300

ns

SCK0 at rising or falling edge time

tR2, tF2

1 000

ns

Note

C is the load capacitance of SO0 output line.

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UPD178004A Datasheet(PDF) 35 Page - NEC

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