CONTENTS
■ Overview---------------------------------------------------------------------------------------------------1
■ Block diagram --------------------------------------------------------------------------------------------2
■ Pin connections ------------------------------------------------------------------------------------------2
■ Pin functions ----------------------------------------------------------------------------------------------3
■ Characteristics--------------------------------------------------------------------------------------------4
1. Absolute maximum ratings ------------------------------------------------------------------------------------------------4
2. Operating conditions --------------------------------------------------------------------------------------------------------4
3. Frequency characteristics and current consumption characteristics -------------------------------------------4
4. Electrical characteristics (DC characteristics) ------------------------------------------------------------------------5
■ Switching characteristics (AC characteristics) ---------------------------------------------------6
1. When ALE is used-----------------------------------------------------------------------------------------------------------6
2. When ALE is fixed at VDD--------------------------------------------------------------------------------------------------8
■ Registers---------------------------------------------------------------------------------------------------9
1. Register table -----------------------------------------------------------------------------------------------------------------9
2. Notes----------------------------------------------------------------------------------------------------------------------------9
3. Functions of register bits (overview) ----------------------------------------------------------------------------------10
4. Setting the fixed-period pulse output mode and fixed-period interrupt mode-------------------------------10
5. Resetting the fixed-period pulse output mode and fixed-period interrupt mode----------------------------10
■ Register description -----------------------------------------------------------------------------------11
1. Timing registers-------------------------------------------------------------------------------------------------------------11
(1) S1 to Y10 registers------------------------------------------------------------------------------------------------------11
(2) W register ----------------------------------------------------------------------------------------------------------------11
(3) H10 register (PM/AM, h20, h10)---------------------------------------------------------------------------------------11
(4) Y1 and Y10 registers ---------------------------------------------------------------------------------------------------11
(5) Out-of-range data ------------------------------------------------------------------------------------------------------11
2. CD register (control register D)-------------------------------------------------------------------------------------------12
(1) HOLD bit (D0) -----------------------------------------------------------------------------------------------------------12
(2) BUSY bit (D1)------------------------------------------------------------------------------------------------------------12
(3) IRQ FLAG bit (D2)------------------------------------------------------------------------------------------------------12
(4) 30-second ADJ bit (D3) -----------------------------------------------------------------------------------------------13
3. CE register (control register E)-------------------------------------------------------------------------------------------13
(1) MASK bit (D0) -----------------------------------------------------------------------------------------------------------13
(2) ITRPT/STND bit (D1) --------------------------------------------------------------------------------------------------14
(3) t0 (D2), t1 (D3) bits ------------------------------------------------------------------------------------------------------14
4. CF register (control register F) ------------------------------------------------------------------------------------------15
(1) RESET bit (D0)----------------------------------------------------------------------------------------------------------15
(2) STOP bit (D1)------------------------------------------------------------------------------------------------------------15
(3) 24/12 bit (D2) ------------------------------------------------------------------------------------------------------------15
(4) TEST bit (D3) ------------------------------------------------------------------------------------------------------------15
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