PD780701Y_15 Datasheet, PDF (28/66 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD780701Y, 780702Y
4.4 Clock Output/Buzzer Output Control Circuit
A clock output/buzzer output control circuit (CKU) is incorporated.
Clocks with the following frequencies can be output as clock output.
• 49.2 kHz/98.3 kHz/197 kHz/393 kHz/786 kHz/1.57 MHz/3.15 MHz/6.29 MHz (@ 6.29-MHz operation with
system clock)
Clocks with the following frequencies can be output as buzzer output.
• 768 Hz/1.54 kHz/3.07 kHz/6.14 kHz (@ 6.29-MHz operation with system clock)
Figure 4-9. Block Diagram of Clock Output/Buzzer Output Control Circuit CKU
fX
Prescaler
8
4 fX/2¹⁰ to fX/2¹³
BUZ/P23
fX to fX/2⁷
BZOE
BCS0, BCS1
Clock
control
circuit
PCL/P27
CLOE
BZOE BCS1 BCS0 CLOE CCS2 CCS1 CCS0
Clock output
select register (CKS)
Internal bus
26
Preliminary Product Information U13920EJ1V0PM00