upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 263

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

12.1 Functions of Clock Output/Buzzer Output Controller
supply to peripheral LSIs. The clock selected with the clock output selection register (CKS) is output.
The clock output controller is intended for carrier output during remote controlled transmission and clock output for
In addition, the buzzer output is intended for square-wave output of buzzer frequency selected with CKS.
Figure 12-1 shows the block diagram of clock output/buzzer output controller.
BZOE
BCS1
CHAPTER 12 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
Figure 12-1. Block Diagram of Clock Output/Buzzer Output Controller
f
f
X
XT
BCS0
CLOE
Internal bus
Prescaler
8
CCS3
Clock output selection register (CKS)
f
X
to f
User’s Manual U15947EJ3V1UD
4
X
CCS2
/2
f
X
7
/2
10
to f
CCS1
X
/2
BZOE
13
CCS0
controller
CLOE
Clock
BCS0, BCS1
Output latch
(P141)
Output latch
(P140)
PM141
PM140
BUZ/BUSY0/
INTP7/P141
PCL/INTP6/P140
263