EM78451AP EMC [ELAN Microelectronics Corp], EM78451AP Datasheet - Page 34
![no-image](/images/no-image-200.jpg)
EM78451AP
Manufacturer Part Number
EM78451AP
Description
8-Bit Microcontroller
Manufacturer
EMC [ELAN Microelectronics Corp]
Datasheet
1.EM78451AP.pdf
(54 pages)
- Current page: 34 of 54
- Download datasheet (374Kb)
EM78451
8-Bit Microcontroller
30 •
4.6 Timer 1
DELAY:
4.6.1
Timer1(TMR1) is an eight-bit clock counter with a programmable prescaler. It is
designed for the SPI module as a baud rate clock generator. TMR1 can be read,
written, and cleared on any reset conditions. If employed, it can be turned down for
power saving by setting TMR1EN bit [T1CON<2>] to 0.
4.6.2
Fig. 15 shows TIMER1 block diagram. Each signal and block is described as follows:
BC 0x0C,1
NOP
JMP SPI
EOP
ORG 0XFFF
JMP INITI
OSC/4: Input clock.
Prescaler: Option of 1:1, 1:4, 1:8, and 1:16 defined by T1P1 and T1P02(T1CON<1,
PWP: Pulse width preset register; the desired width of baud clock is written in
TMR1: Timer 1 register; TMR1 increases until it matches with PWP, and then
0>). It is cleared when a value is written to TMR1 or T1CON, and during any kind of
reset as well.
advance.
resets to 0. If it is chosen optionally in the SPI mode, its output is fed as a shifting
clock.
Overview
Function description
Fig. 15 TIMER1 Block Diagram
; (User’s program)
(This specification is subject to change without further notice)
Product Specification (V1.2) 05.27.2004
Related parts for EM78451AP
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![EM25LV010-25KGBS](/images/no-image3.png)
Part Number:
Description:
1 Megabit (128K x 8) Serial Flash Memory
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM25LV512-25KGBS](/images/no-image3.png)
Part Number:
Description:
512 K (64K x 8) Bits Serial Flash Memory
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91203A](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91240AP](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91401B](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91410D](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91450A](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91710](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91810B](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM91865A](/images/no-image3.png)
Part Number:
Description:
13 MEMORY TONE/PULSE DIALER WITH HF, HD, REDIAL AND VOLUME CONTROL FUNCTION
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![HM91710A](/images/no-image3.png)
Part Number:
Description:
TONE/PULSE SWITCHABLE DIALER
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM78156EAS](/images/no-image3.png)
Part Number:
Description:
8-Bit Microcontroller with MASK ROM
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM78159NAS](/images/no-image3.png)
Part Number:
Description:
8-Bit Microcontroller with OTP ROM
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM84502BP](/images/no-image3.png)
Part Number:
Description:
PS/2 MOUSE ENCODER
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet:
![EM78468AQ](/images/no-image3.png)
Part Number:
Description:
8-BIT Microcontroller
Manufacturer:
EMC [ELAN Microelectronics Corp]
Datasheet: