©NEC Electronics Corporation 2004

78K0/KF2

ZUD-CC-04-0129-E

Data Published Oct 2004 N CP(K)

(2) Serial interface

(TA = -40 to +85

°C, 1.8 V ≤ VDD = EVDD ≤ 5.5 V, 2.3 V ≤ AVREF ≤ VDD= EVDD, VSS = EVSS = AVSS = 0 V)

(a)UART mode (UART6, dedicated baud rate generator output)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Transfer rate

312.5

kbps

(b) UART mode (UART0, dedicated baud rate generator output)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Transfer rate

312.5

kbps

(c) IIC0 mode

Normal mode

High speed mode

Parameter

Symbol

MIN.

. MAX

MIN.

. MAX

Unit

SCL0 clock frequency

fCLK

0

100

0

400

kHz

Start/restart condition setup time

Note1

tSU: STA

4.8

-

0.7

-

µs

hold time

tHD: STA

4.1

-

0.7

-

µs

Hold time in SCL = ”L”

tLOW

5.0

-

1.25

-

µs

Hold time in SCL = ”H”

tHIGH

5.0

-

1.25

-

µs

Data setup time (reception)

tSU: DAT

0

-

0

-

µs

Data hold time (sending)

Note2

tHD: DAT

0.47

4.0

0.23

1.00

µs

Notes 1.

The first clock pulse is generated after this period in the case of the start/restart condition.

2.

The MAX of tHD:DAT is normal transition value. Wait is occurred in the term of

ACK(acknowledge) .

Caution

Specification at 1.8 V ≤ VDD < 2.7V is not fixed.