No. 6651-2/12

LC72346W, 72347W

Continued from preceding page.

• Backup mode: The crystal oscillator is stopped.

• Static power-on function:

Backup state is cleared with the PF port

• Beep tone: 1.5 and 3.1 kHz

• Built-in DC-DC converter:

For LCD and A/D converter use (3 V)

Can also be used for TU + B creation by using a

secondary coil.

• Built-in remaining battery life verification function:

• Memory retention voltage: 0.5 V or higher

• Dedicated memory power supply: The RAM retention

time has been increased by the provision of a dedicated

memory power supply.

• Package: SQFP-64 (0.5-mm pitch)

Pin Assignment

61

62

63

64

58

59

60

55

56

57

52

53

54

49

50

51

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

15

16

33

31 32

29 30

27 28

25 26

23 24

21 22

19 20

17 18

13

14

11

12

9

10

7

8

5

6

3

4

S5

XOUT

1

S6

TEST2

S7

PA3

S8

PA2

S9

PA1

S10

LC72346W

LC72347W

PA0

S11

PB3

S12

PB2

S13/PH0

PB1

S14/PH1

PB0

S15/PH2

PC3

S16/PH3

PC2

S17/PG0

PC1

S18/PG1

PC0

S19/PG2

PD3

PD2

S20/PG3

2