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EM78P451WM датащи(PDF) 34 Page - ELAN Microelectronics Corp

номер детали EM78P451WM
подробное описание детали  8-Bit Microcontroller with OTP ROM
PDF  54 Pages
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производитель  EMC [ELAN Microelectronics Corp]
домашняя страница  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P451WM датащи(HTML) 34 Page - ELAN Microelectronics Corp

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EM78P451
8-Bit Microcontroller with OTP ROM
30
•
Product Specification (V1.1) 06.30.2003
(This specification is subject to change without further notice)
4.6.2 Function Description
Fig. 15 shows TIMER1 block diagram. Each signal and block is described as follows:
Fig. 15 TIMER1 Block Diagram
OSC/4
:
Input clock.
Prescaler
:
Option of 1:1, 1:4, 1:8, and 1:16 defined by T1P1 and T1P02 (T1CON<1,
0>). It is cleared when a value is written to TMR1 or T1CON, and during
any kind of reset as well.
PWP
:
Pulse width preset register. The desired width of baud clock is written in
advance.
TMR1
:
Timer 1 register. TMR1 increases until it matches with PWP, and then
resets to 0. If it is chosen optionally in the SPI mode, its output is fed as
a shifting clock.
Comparator:
To change the output status while a match occurs. The TMR1IF flag will
be set at the same time.
4.6.3 Programmed the Related Registers
The related registers of the defining TMR1 operation are shown in Table 4 and Table 5
Table 4 Related Control Registers of the TMR1
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x0C
SPIS/RC
0
0
0
TM1IF
OD3
OD4
RBFIF
RBF
0x0F
INTC/IOCF
0
0
0
0
TM1IE
SPIIE
EXIE
TCIE



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