PD17012_15 Datasheet, PDF(211/320 Page) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

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PD17012_15 Datasheet, PDF (211/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

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ÂµPD17012, 17P012

18. BEEP

18.1 General

Figure 18-1 shows the outline of BEEP.

BEEP outputs 1 kHz, 3 kHz, 200 Hz, or 9 kHz clock from the P0B0/BEEP0 and P0B1/BEEP1 pins.

Figure 18-1. Outline of BEEP

P0B1/BEEP1

P0B0/BEEP0

P0BBIO1 flag

BEEP1SEL flag

BEEP1CK1 flag

BEEP1CK0 flag

I/O select

block

I/O select

block

Output select

block

Clock

select

block

Output latch

Output latch

Output select

block

Clock

select

block

Clock

generation block

1 kHz

3 kHz

200 Hz

9 kHz

P0BBIO0 flag

BEEP0SEL flag

BEEP0CK1 flag

BEEP0CK0 flag

Remarks 1. P0BBIO1 and P0BBIO0 (bits 1 and 0 of the port 0B bit I/O select register; refer to Figure 18-2) set the

P0B1/BEEP1 and P0B0/BEEP0 pins in the input/output mode.

2. BEEP1SEL and BEEP0SEL (bits 1 and 0 of the BEEP select register; refer to Figure 18-3) set the P0B1/

BEEP1 and P0B0/BEEP0 pin in the general-purpose output port or BEEP output mode.

3. BEEP1CK1, BEEP1CK0, BEEP0CK1, and BEEP0CK0 (bits 3 to 0 of the BEEP clock select register;

refer to Figure 18-4) set the output frequencies of BEEP1 and BEEP0.

Data Sheet U10101EJ4V0DS

209

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