upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 156

• Manufacturer Part Number: upd17072
• Description: 4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
• Manufacturer: Renesas Electronics Corporation.

17.2 Output Wave Form of BEEP
156
(3) Minimum time until clock is output from BEEP pin after instruction execution
(f = 1.5 kHz)
(1) Output wave of f = 1.5 kHz and f = 3 kHz
(2) Maximum time until clock is output from BEEP pin after instruction execution
(f = 3 kHz)
(f = 1.5 kHz)
(f = 3 kHz)
(f = 1.5 kHz)
BEEP
BEEP
(f = 3 kHz)
BEEP
BEEP
Example
BEEP
BEEP
Instruction
Instruction
execution
execution
133.3 s
Instruction
Instruction
execution
execution
Program to output 3-kHz clock from BEEP pin
BANK1
MOV
133.3 s
133.3 s
333.3 s
325.8 s
325.8 s
200 s
5BH, #0011B
333.3 s
; Same as MOV BANK, #0001B
; Writes 0011B to data memory address 5BH
; Outputs 3 kHz from BEEP pin
PD17072,17073