PCE84C882 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

PCE84C882

Microcontroller for monitor OSD and auto-sync applications

Philips Electronics 

Philips Semiconductors

Microcontroller for monitor OSD

and auto-sync applications

Preliminary specification

PCE84C882

1 FEATURES

1.1 General

• CMOS 8-bit CPU (enhanced 8048 CPU) with 8 kbytes

system ROM and 192 bytes system RAM

• One 8-bit timer/event counter (T1) and one 8-bit counter

triggered by external input (T3)

• Four single level vectored interrupt sources: external

(INTN), counter/timer, I2C-bus and VSYNCN

• 2 directly testable inputs T0 and T1

• On-chip oscillator clock frequency: 1 to 10 MHz

• On-chip Power-on-reset with low power detector

• Twelve quasi-bidirectional I/O lines, configuration of

each I/O line individually selected by mask option

• Idle and Stop modes for reduced power consumption

• Operating temperature: −25 to +85 °C

• Operating voltage: 4.5 to 5.5 V

• Package: SDIP42.

1.2 Special

• Master-slave I2C-bus interface

• Three 6-bit Pulse Width Modulated outputs

(PWM4; PWM6 and PWM7)

• Four 7-bit Pulse Width Modulated outputs

(PWM0 to PWM3)

• One 14-bit Pulse Width Modulated output (PWM8)

• One 4-bit ADC channel

• 14 derivative I/O ports.

1.3 OSD

• Maximum dot frequency (fOSD): 20 MHz (see Section 20

for details)

• Display RAM: 64 × 10 bits

• Display character fonts: 62 + 2 special reserved codes

• Character matrix: 12 × 18 (no spacing between

characters)

• 4 character sizes: 1H/1V, 1H/2V, 1H/3V and 1H/4V

• 64 Horizontal starting positions (4 dots for each step)

• 64 Vertical starting positions (4 scan lines for each step)

• Vertical jumping cancelling circuit

• Spacing between character rows: 0, 4, 8 and 12 scan

lines

• Foreground colours: 8 on a character-by-character

basis

• Background colours: 8 on a word-by-word basis

• Background/shadowing modes: 4 modes available, No

background, North shadowing, Box shadowing and

Frame shadowing (raster blanking) on a frame basis

• On-chip Phase-Locked Loop (PLL) oscillator (auto-sync

with Hsync) with programmable oscillator for On Screen

Display (OSD) function

• Character blinking frequency: programmable using

fVsync divisors of 16, 32, 64 and 128; on a frame basis

• Character blinking ratios: 1 : 1, 1 : 3 and 3 : 1

• Programmable active level polarities of VSYNCN,

HSYNCN, R, G, B and FB

• Flexible display format by using Carriage Return Code

• Auto display RAM address (DCRAR) incremented after

write operation to the Character Data Register (DCRCR)

• VSYNCN generates an interrupt (enabled by software)

when VIEN is active.

2 GENERAL DESCRIPTION

The PCE84C882 is the enhanced version of the

PCE84C886 having all the features of this device but in

addition provides:

• Two dedicated power pins for the PLL oscillator circuit

• A choice of two mask-programmable prescaler values

for the PLL oscillator

• A higher frequency OSD clock - up to 20 MHz

• An improved edge-sensitive counter (T3).

Differences between the PCE84C882 and the

PCE84C886 are shown in Table 1 and also highlighted

throughout the document.

The PCE84C882 is a member of the 84CXXX CMOS

microcontroller family. It is suitable for use with auto-sync

monitors handling mode detection, digital and DPMS

control and has an enhanced OSD facility for menu driving

applications. The device uses the PCE84CXX processor

core and has 8 kbytes of ROM and 192 bytes of RAM. I/O

requirements are catered for with 12 general purpose

bidirectional I/O lines plus 14 derivative I/O lines. 8 PWM

analog outputs are available for analog control purposes

and one 4-bit ADC. The device has an 8-bit counter, for

use in pulse counting applications; an 8-bit timer/counter

with programmable clock and an on-chip programmable

PLL oscillator that generates the OSD clock. A

master-slave I2C-bus interface and 2 directly testable lines

are also available. The block diagram of the PCE84C882

is shown in Fig.1.

1996 Jan 08

3

Share Link: