MSM6542-01 查看數據表（PDF） - Oki Electric Industry

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MSM6542-01

REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT

Oki Electric Industry 

MSM6542-01/02/03

i) In the interrupt mode (when the IT/PLS1 bit is 1)

(i-1) When DP is 0:

"1"

IRQ FLAG1 "0"

IRQ FLAG0 "0"

¡ Semiconductor

Interrupt timing

The IRQ FLAG1 bit is read

(i-2) When DP is 1:

"1"

IRQ FLAG1 "0"

122µs

"1"

IRQ FLAG0 "0"

122µs

Interrupt timing

The IRQ FLAG1 bit is read

Note:

When the IRQ FLAG1 bit is read within the 122

µs interval with the MASK1 bit set at 1, it is not

cleared. The IRQ FLAG1 bit is cleared after the

122 µs interval ends.

ii) In the periodic pulse output mode (when the IT/PLS1 bit is 0)

"1"

IRQ FLAG2 "0"

IRQ FLAG0 "0"

Output timing

Automatic restoration

0 is written in the IRQ FLAG1 bit

with DP set at 0

88

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