PCA9501D 查看數據表（PDF） - Philips Electronics

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PCA9501D

8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

Philips Electronics 

Philips Semiconductors

8-bit I2C and SMBus I/O port with interrupt,

2-kbit EEPROM and 6 address pins

Product data

PCA9501

handbook, full pagewidth START

PROTOCOL

CONDITION

(S)

t SU;STA

BIT 7

MSB

(A7)

SCL

t BUF

tr

SDA

t HD;STA

BIT 6

(A6)

1 / f SCL

tf

BIT 0

LSB

(R/W)

ACKNOWLEDGE

(A)

STOP

CONDITION

(P)

t SU;DAT

t HD;DAT

Figure 22.

t VD;DAT

MBD820

t SU;STO

SW00561

POWER-UP TIMING

SYMBOL

PARAMETER

MAX.

UNIT

tPUR1 Power-up to Read Operation

1

ms

tPUW1 Power-up to Write Operation

5

ms

NOTE:

1. tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated. These parameters are

guaranteed by design.

WRITE CYCLE LIMITS

SYMBOL

PARAMETER

MIN.

tWR1

Write Cycle Time

—

NOTE:

1. tWR is the maximum time that the device requires to perform the internal write operation.

Write Cycle Timing

TYP. (5)

5

MAX.

10

UNIT

ms

SCL

SDA

8th Bit

Word n

ACK

tWR

Stop

Condition

Figure 23.

Start

Condition

MEMORY

ADDRESS

SW00560

2003 Sep 12

17

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