PCA9501 Datasheet, PDF (17/22 Pages) NXP Semiconductors – 8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins

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
t_PUR1 Power-up to Read Operation
1
ms
t_PUW1 Power-up to Write Operation
5
ms
NOTE:
1. t_PUR and t_PUW are the delays required from the time V_CC is stable until the specified operation can be initiated. These parameters are
guaranteed by design.
WRITE CYCLE LIMITS
SYMBOL
PARAMETER
MIN.
t_WR1
Write Cycle Time
—
NOTE:
1. t_WR 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
t_WR
Stop
Condition
Figure 23.
Start
Condition
MEMORY
ADDRESS
SW00560
2003 Sep 12
17