MB89850R Ver la hoja de datos (PDF) - Fujitsu

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Fabricante

MB89850R

8-bit Proprietary Microcontroller

Fujitsu 

MB89850R Series

(9) UART and Serial I/O Timing

(VCC = +5.0 V±10%, AVSS = VSS = 0.0 V, TA = –40°C to +85°C)

Parameter

Symbol Pin name Condition

Value

Min.

Max.

Unit Remarks

Serial clock cycle time

tSCYC

SCK1,SCK2

2 tinst*

—

µs

SCK1 ↓ → SO1 time

SCK2 ↓ → SO2 time

tSLOV

Valid SI1 → SCK1 ↑ Valid

SI2 → SCK2 ↑

tIVSH

SCK1 ↑ → valid SI1 hold time

SCK2 ↑ → valid SI2 hold time

tSHIX

SCK1, SO1

SCK2, SO2

SI1, SCK1

SI2, SCK2

SCK1, SI1

SCK2, SI2

Internal shift

clock mode

Load

condition:

50 pF

–200

1/2 tinst*

1/2 tinst*

200

ns

—

µs

—

µs

Serial clock “H” pulse width

Serial clock “L” pulse width

SCK1 ↓ → SO1 time

SCK2 ↓ → SO2 time

Valid SI1 → SCK1 ↑ Valid

SI2 → SCK2 ↑

tSHSL

tSLSH

tSLOV

tIVSH

SCK1,

SCK2

SCK1, SO1

SCK2, SO2

SI1, SCK1

SI2, SCK2

External shift

clock mode

Load

condition:

50 pF

1 tinst*

1 tinst*

0

1/2 tinst*

—

µs

—

µs

200

ns

—

µs

SCK1 ↑ → valid SI1 hold time

SCK2 ↑ → valid SI2 hold time

tSHIX

SCK1, SI1

SCK2, SI2

1/2 tinst*

—

µs

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

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