em78p811 ELAN Microelectronics Corp, em78p811 Datasheet - Page 20

• Manufacturer Part Number: em78p811
• Description: 8-bit Micro-controller
• Manufacturer: ELAN Microelectronics Corp

VII.3 TCC/WDT Prescaler
WDT only at the same time.
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* This specification is subject to be changed without notice.
9. IOCF (Interrupt Mask Register)
• An 8 bit counter is available for TCC or WDT determined by the status of the bit 3 (PAB) of the CONT register.
• See the prescaler ratio in CONT register.
• Fig. 12 depicts the circuit diagram of TCC/WDT.
• Both TCC and prescaler will be cleared by instructions which write to TCC each time.
•
•
* Bit0: unused
* Bit1: cooked data or raw data select bit , 0/1 ==> cooked data/raw data
* Bit3~Bit2: counter1 prescaler , reset=(0,0)
* Bit4:counter1 source , (0/1)=(32768Hz/3.679MHz if enable)
* Bit5:counter2 source , (0/1)=(32768Hz/3.679MHz if enable)
* Bit7:P77 opendrain control (0/1)=(disable/enable)
* Bit6:P76 opendrain control (0/1)=(disable/enable)
There is an 8-bit counter available as prescaler for the TCC or WDT. The prescaler is available for the TCC only or
The prescaler will be cleared by the WDTC and SLEP instructions, when assigned to WDT mode.
The prescaler will not be cleared by SLEP instructions, when assigned to TCC mode.
* Bit 0 ~ 7 interrupt enable bit.
* IOCF Register is readable and writable.
0: disable interrupt
1: enable interrupt
INT3
7
16.38KHz
(PSC1,PSC0) = (0,0)=>1:1 , (0,1)=>1:2 , (1,0)=>1:4 , (1,1)=>1:8
FSKDATA
Fig. 12 Block diagram of TCC WDT
6
C8_2
5
C8_1
4
19
INT2 INT1 INT0
3
2
scale=1:1
1
TCIF
0
8-bit OTP Micro-controller
EM78P811