UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 280

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

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.
280
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
f
PRS
BCS1
CHAPTER 12 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
Figure 12-1. Block Diagram of Clock Output/Buzzer Output Controller
f
SUB
BCS0
Prescaler
8
CLOE
f
Internal bus
PRS
to f
4
CCS3
PRS
Clock output selection register (CKS)
/2
f
User’s Manual U17554EJ4V0UD
PRS
7
/2
CCS2
10
to f
PRS
CCS1
/2
13
BZOE
CCS0
controller
CLOE
Clock
BCS0, BCS1
Output latch
(P73)
Output latch
(P72)
PM73
PM72
BUZ/INTP7/P73
PCL/INTP6/P72