GENERAL DESCRIPTION

BL0939 is an ASIC designed for multi-fee meter that can

be applicable to electronic and mechanical meter. With special

programmer, it can provide multi-fee function required in the

electro-energy measure system. Clock initialization and period

set can be done before leaving factory or when the meter

installed. It’s clock and period can be read or reset only when

the meter taken down, so it’s easy to encrypt. The specially

designed low-power clock circuit assures that BL0939 will run

●Outputs four control signal.

●Four time points be set in random.

●Initialization clock and period can be

displayed on the programmer.

●I2C Bus Interface.

●Periods shifting display.

●Working according to the period set.

●24-hour time display.

●Time accuracy to ±0.5 second per day.

●Operating ambient temperature range from –

40 to 85℃.

●Minimal programmable period 30 min.

●Period control accuracy to 1min.

●Output control pulse with 5V /10mA.

●Keeping voltage: 2.7V to 6.0V.

●Low supply current under 1uA when power off.