UPD178024 datasheet(40/56 Pages) NEC

40 / 56 page

µPD178023, 178024

Data Sheet U14126EJ1V0DS00

(b) Serial interface (SIO3)

(i) 3-wire serial I/O mode (SCK3 ... internal clock output)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

SCK3 cycle time

tKCY1

800

SCK3 high/low-level width

tKH1,tKCY1/2 – 50

tKL1

SI3 setup time (to SCK3

↑)tSIK1

100

SI3 hold time (from SCK3

↑)tKSI1

400

SCK3

↓→ SO3 output delay time

tKSO1

C = 100 pF Note

300

Note

C is the load capacitance of SCK3 and SO3 output line.

(ii) 3-wire serial I/O mode (SCK3 ... external clock input)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

SCK3 cycle time

tKCY2

800

SCK3 high/low-level width

tKH2,

400

tKL2

SI3 setup time (to SCK3

↑)tSIK2

100

SI3 hold time (from SCK3

↑)tKSI2

400

SCK3

↓→ SO3 output delay time

tKSO2

C = 100 pF Note

300

SCK3 at rising or falling edge time

tR2, tF2

1000

Note

C is the load capacitance of SO3 output line.

(d) Serial interface (UART0: Dedicated baud rate generator output)

Parameter

Symbol

Test Conditions

MIN.

TYP.

MAX.

Unit

Transfer rate

38400

bps

UPD178024 Datasheet(PDF) 40 Page - NEC

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