MB89663 datasheet(31/48 Pages) FUJITSU

31 / 48 page

MB89660 Series

(6) Serial I/O Timing and UART Timing

(VCC = +5.0 V

±10%, AVSS = VSS = 0.0 V, TA = –40°C to +85°C)

* : For information on tinst, see “(4) Instruction Cycle.”

Parameter

Symbol

Condition

Value

Unit

Remarks

Min.

Max.

Serial clock cycle time

tSCYC

SCK1,

SCK2

Internal

shift clock

mode

2 tinst*—

µs

SCK1

↓ → SO1 time

SCK2

↓ → SO2 time

tSLOV

SCK1, SO1

SCK2, SO2

–200

200

Valid SI1

→ SCK1 ↑

Valid SI1

→ SCK1 ↑

tIVSH

SI1, SCK1

SI2, SCK2

1/2 tinst*—

µs

SCK1

↑ → valid SI1 hold time

SCK2

↑ → valid SI2 hold time tSHIX

SCK1, SI1

SCK2, SI2

1/2 tinst*—

µs

Serial clock “H” pulse width tSHSL

SCK1,

SCK2

External

shift clock

mode

1 tinst*—

µs

Serial clock “L” pulse width tSLSH

SCK1,

SCK2

1 tinst*—

µs

SCK1

↓ → SO1 time

SCK2

↓ → SO2 time

tSLOV

SCK1, SO1

SCK2, SO2

200

Valid SI1

→ SCK1 ↑

Valid SI2

→ SCK2 ↑

tIVSH

SI1, SCK1

SI2, SCK2

1/2 tinst*—

µs

SCK1

↑ → valid SI1 hold time

SCK2

↑ → valid SI2 hold time tSHIX

SCK1, SI1

SCK2, SI2

1/2 tinst*—

µs

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