EM78P510N
8-Bit Microcontrollers
6.2.49 Bank 4 R5 LEDDCR (LED Drive Control Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LEDD7
LEDD6
LEDD5
LEDD4
LEDD3
LEDD2
LEDD1
LEDD0
Bits 7~0 (LEDD7~LEDD0): 8-bit LED Drive Control Registers
0 : Port 9 functions as normal I/O
1 : Port 9 functions as LED direct drive I/O
6.2.50 Bank 4 R6 WBCR (Watchdog Timer and Buzzer Control
Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
WTCS
WTIE
WTIF
WTSSB1 WTSSB0
BUZE
BSSB1
BSSB0
Bit 7 (WTCS): Watchdog Timer and Buzzer Clock Source Select Bit
0 : Main Clock divided by 256
1 : Sub clock
Bit 6 (WTIE): Watch Timer Enable Bit and Interrupt Mask
0 : Disable
1 : Enable
Bit 5 (WTIF): Watch Timer Interrupt Flag
Bits 4~3 (WTSSB1~ WTSSB0): Watch Timer Interval Select Bits
WTSSB1
WTSSB0
Watch Timer Interval Select (WTCS=1)
0
0
1
1
0
1
0
1
1.0S
0.5S
0.25S
3.91ms
Bit 2 (BUZE): Buzzer Enable and PORT 91 as Buzzer Output Pin
0 : No action
1 : Enable buzzer output
Bits 1~0 (BSSB1~BSSB0): Buzzer Output Frequency Select Bits
BSSB1
BSSB0
Buzzer Signal Select (WTCS=1)
0
0
1
1
0
1
0
1
0.5kHz
1kHz
2kHz
4kHz
34 •
Product Specification (V0.9) 09.12.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
