No. 7253-2/15

LC723481W/2W/3W

Continued from preceding page.

I/O ports: 16 pins (Of these 8 can be switched over to

function as LCD ports as a mask options.)

• PLL: Dead band control is supported. (Four types)

Reference frequencies: 1, 3, 3.125, 5, 6.25, 12.5,

and 25 kHz

• Input frequencies: FM band: 10 to 250 MHz

AM band: 0.5 to 40 MHz

• Input sensitivity:

FM band: 35 mVrms (50 mVrms at 130 MHz or higher

frequency)

AM band: 35 mVrms

• IF counting: Using the HCTR input pin for 0.4 to

12 MHz signals

• External reset input: During CPU and PLL operations,

instruction execution is started from

location 0.

• Built-in power-on reset circuit:

The CPU starts execution from location 0 when power is

first applied.

• Halt mode: The controller-operating clock is stopped.

• Backup mode: The crystal oscillator is stopped.

• Static power-on function: Backup state is cleared with

the PF port

• Beep tone: 1.5625 and 3.125 kHz

• Built-in low-pass filter amplifier: This circuit obviates

the need for an external amplifier for the PLL circuit and

contributes to reduced end product costs.

• Built-in DC/DC converter:

Cost reduced in tuner-use power supply circuit

• Memory retention voltage: 0.9 V at least

— PLL: 1.8 to 3.6 V

— CPU: 1.4 to 3.6 V

— ADC: 1.6 to 3.6 V

• Optional function switches:

— PH0 to PH3/S13 to S16

— PG0 to PG3/S17 to S20

— PG0 to PG3 (open-drain output/general-purpose

output)

— PH0 to PH3 (open-drain output/general-purpose

output)

— FM DC/DC clock (75 kHz or 1/256 times the local

FM oscillator frequency)

— AM DC/DC clock (1/2, 1/4, 1/8, or 1/16 times the

AM local oscillator frequency)

• Package: SQFP-64 (0.5-mm pitch)

Pin Assignment

XOUT

TEST2

PA3

PB3

PC3

PD3

PD2

S12

S11

S10

S9

S8

S7

S6

S5

S4

S3

S2

S1

COM4

COM3

COM2

COM1

PC2

PC1

PC0

PB2

PB1

PB0

PA2

PA1

PA0

1

48

2

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

3

4

5

6

7

8

9

10

11

12

13

14

15

16

General-purpose

inputs

General-purpose unbalanced outputs

Open drain outputs

General-purpose I/O

General-

purpose

I/O