UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 290
UPD78F0413GA-GAM-AX
Manufacturer Part Number
UPD78F0413GA-GAM-AX
Description
8BIT UC, 32K FLASH, 1KB RAM, LCD
Manufacturer
NEC
Datasheet
1.UPD78F0413GA-GAM-AX.pdf
(562 pages)
Specifications of UPD78F0413GA-GAM-AX
Controller Family/series
UPD78F
No. Of I/o's
30
Ram Memory Size
1024Byte
Cpu Speed
10MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
32KB
Oscillator Type
External, Internal
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11.4 Operations of Buzzer Output Controller
290
(2) Port mode register 3 (PM3)
The buzzer frequency is output as the following procedure.
<1> Select the buzzer output frequency with bits 5 and 6 (BCS0, BCS1) of the clock output selection register
<2> Set bit 7 (BZOE) of CKS to 1 to enable buzzer output.
This register sets port 3 input/output in 1-bit units.
When using the P33/TI000/RTCDIV/RTCCL/BUZ/INTP2 pin for buzzer output, clear PM33 and the output
latches of P33 to 0.
PM3 is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets PM3 to FFH.
(CKS) (buzzer output in disabled status).
Address: FF23H
Symbol
PM3
PM3n
7
1
0
1
Figure 11-3. Format of Port Mode Register 3 (PM3)
After reset: FFH
CHAPTER 11 BUZZER OUTPUT CONTROLLER
Output mode (output buffer on)
Input mode (output buffer off)
6
1
User’s Manual U18698EJ1V0UD
5
1
P3n pin I/O mode selection (n = 1 to 4)
R/W
PM34
4
PM33
3
PM32
2
PM31
1
0
1
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