em78p510nso32j/s ELAN Microelectronics Corp, em78p510nso32j/s Datasheet - Page 37

• Manufacturer Part Number: em78p510nso32j/s
• Description: 8-bit Microprocessor With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

Product Specification (V1.1) 01.25.2008
(This specification is subject to change without further notice)
6.2.48 Bank 4 R5 LEDDCR (LED Drive Control Register)
Bits 7~0 (LEDD7~LEDD0): 8-bit LED Drive Control Registers
6.2.49 Bank 4 R6 WBCR (Watch Timer and Buzzer Control Register)
Bit 7 (WTCS): Watch Timer and Buzzer Clock Source Select Bit
Bit 6 (WTIE): Watch Timer Enable Bit and Interrupt Mask
Bit 5 (WTIF): Watch Timer Interrupt Flag
Bits 4~3 (WTSSB1~ WTSSB0): Watch Timer Interval Select Bits
Bit 2 (BUZE): Buzzer Enable and Port 91 as Buzzer Output Pin
Bits 1~0 (BSSB1~BSSB0): Buzzer Output Frequency Select Bits
LEDD7
WTCS
Bit 7
Bit 7
LEDD6
WTIE
Bit 6
Bit 6
0 : Port 9 functions as normal I/O
1 : Port 9 functions as LED direct drive I/O
0 : Main Clock divided by 256
1 : Sub clock
0 : Disable
1 : Enable
0 : No action
1 : Enable buzzer output
WTSSB1
BSSB1
0
0
1
1
0
0
1
1
LEDD5
WTIF
Bit 5
Bit 5
WTSSB0
BSSB0
0
1
0
1
0
1
0
1
WTSSB1
LEDD4
Bit 4
Bit 4
Buzzer Signal Select
Timer Interval Select
WTSSB0
LEDD3
(WTCS=1)
Bit 3
Bit 3
(WTCS=1)
8-Bit Microprocessor with OTP ROM
0.5kHz
3.91ms
1kHz
2kHz
4kHz
0.25S
1.0S
0.5S
LEDD2
BUZE
Bit 2
Bit 2
Fm=8MHz (WTCS=0)
Fm=8MHz (WTCS=0)
LEDD1
BSSB1
Bit 1
Bit 1
EM78P510N
0.5kHz
3.91ms
1kHz
2kHz
4kHz
0.25S
1.0S
0.5S
LEDD0
BSSB0
Bit 0
Bit 0
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