M41T00CAPPC1 データシートの表示（PDF） - STMicroelectronics

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M41T00CAPPC1

Serial access real-time clock (RTC) with integral backup battery and crystal

STMicroelectronics 

Operation

M41T00CAP

An alternate READ mode may also be implemented whereby the master reads the

M41T00S slave without first writing to the (volatile) address pointer. The first address that is

read is the last one stored in the pointer (see Figure 8).

Figure 6. Slave address location

R/W

START

SLAVE ADDRESS

A

11 01 0 0 0

Figure 7. READ mode sequence

BUS ACTIVITY:

MASTER

SDA LINE

S

WORD

ADDRESS (An)

S

BUS ACTIVITY:

SLAVE

ADDRESS

SLAVE

ADDRESS

DATA n

AI00602

DATA n+1

DATA n+X P

Figure 8. Alternative READ mode sequence

BUS ACTIVITY:

MASTER

SDA LINE

S

DATA n

BUS ACTIVITY:

SLAVE

ADDRESS

DATA n+1

12/27

Doc ID 14557 Rev 5

AI00899

DATA n+X P

AI00895

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