UPD78F0138 NEC, UPD78F0138 Datasheet - Page 248

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

11.2 Configuration of Clock Output/Buzzer Output Controller
11.3 Register Controlling Clock Output/Buzzer Output Controller
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The clock output/buzzer output controller includes the following hardware.
The following two registers are used to control the clock output/buzzer output controller.
• Clock output selection register (CKS)
• Port mode register 14 (PM14)
(1) Clock output selection register (CKS)
This register sets output enable/disable for clock output (PCL) and for the buzzer frequency output (BUZ), and
sets the output clock.
CKS is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears CKS to 00H.
Control registers
Table 11-1. Clock Output/Buzzer Output Controller Configuration
CHAPTER 11 CLOCK OUTPUT/BUZZER OUTPUT CONTROLLER
Item
Clock output selection register (CKS)
Port mode register 14 (PM14)
Port register 14 (P14)
User’s Manual U16228EJ2V0UD
Configuration