UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 307

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• 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 ICs. 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
f
PRS
f
Figure 12-1. Block Diagram of Clock Output/Buzzer Output Controller
SUB
BCS0
CLOE
Internal bus
Prescaler
8
f
PRS
CCS3
Clock output selection register (CKS)
to f
User’s Manual U17260EJ6V0UD
4
PRS
CCS2
/2
7
f
f
PRS
PRS
/2
/2
10
13
CCS1
to
BZOE
CCS0
controller
CLOE
Clock
BCS0, BCS1
Output latch
(P141)
Output latch
(P140)
PM141
PM140
BUZ/INTP7/P141
PCL/INTP6/P140
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