Samsung KS88C8432, KS88C8424, KS88P8432 Datasheet

Product Overview

Address Spaces

Addressing Modes

Control Registers

Interrupt Structure

Instruction Set

KS88C8424/C8432/P8432 PRODUCT OVERVIEW

1 PRODUCT OVERVIEW

SAM87 PRODUCT FAMILY

Samsung's SAM87 family of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mask-programmable ROM sizes. Important CPU features include:

— Efficient register-oriented architecture — Selectable CPU clock sources — Release of Idle and Stop power-down modes by interrupt — Built-in basic timer circuit with watchdog function

A sophisticated interrupt structure recognizes up to eight interrupt levels. Each level can have one or more interrupt sources and vectors. Fast interrupt processing (within a minimum of six CPU clocks) can be assigned to specific interrupt levels.

KS88C8424/C8432/P8432 MICROCONTROLLERS

The KS88C8424 microcontroller has a 24-Kbyte on-chip program memory and the KS88C8432 has a 32-Kbyte. Both chips have a 272-byte general-purpose internal register file. The interrupt structure has nine interrupt sources with nine interrupt vectors. The CPU recognizes seven interrupt priority levels.

Using a modular design approach, the following peripherals were integrated with the SAM87 core to make the KS88C8424/C8432/P8432 microcontrollers suitable for use in color television and other types of screen display applications:

— Four programmable I/O ports (26 pins total: 16 general-purpose I/O pins; 10 n-channel, open-drain

output pins) — 4-bit resolution A/D converter (4 channels) — 14-bit PWM output (Two channels: push-pull type, open-drain type) — Basic timer (BT) with watchdog timer function — One 8-bit timer/counter (T0) with interval timer and PWM mode — One 8-bit general-purpose timer/counter (TA) with prescalers — On-screen display (OSD) with a wide range of programmable features, including halftone control

signal output The KS88C8424 and the KS88C8432 are available in versatile 42-pin SDIP package.

OTP

The KS88C8424/C8432 microcontrollers are also available in OTP (One Time Programmable) version, named the KS88P8432. The KS88P8432 microcontroller has an on-chip 32-Kbyte one-time-programmable EPROM instead of a masked ROM. The KS88P8432 is comparable to the KS88C8424/C8432, both in function and pin configuration.

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PRODUCT OVERVIEW KS88C8424/C8432/P8432

FEATURES

CPU

• SAM87 CPU core

Memory

• 24-Kbyte (KS88C8424) or 32-Kbyte (KS88C8432) internal program memory

• 272-byte general-purpose register area

Instruction Set

• 78 instructions

• IDLE and STOP instructions added for powerdown modes

Instruction Execution Time

• 750 ns (minimum) with an 8 MHz CPU clock

Interrupts

• 9 interrupt sources with 9 vectors

• 7 interrupt levels

• Fast interrupt processing for select levels

General I/O

• Four I/O ports (26 pins total)

• Six open-drain pins for up to 6 V loads

• Four open-drain pins for up to 5 V loads

Pulse Width Modulation Module

• 14-bit PWM with two-channel output (push-pull type, open-drain type)

• 8-bit PWM with four-channel, push-pull and opendrain

• PWM counter and data capture input pin

• Frequency: 5.859 kHz to 23.437 kHz with a 6 MHz CPU clock

On-Screen Display (OSD)

• Video RAM: 252 × 13-bits

• Character generator ROM: 384 × 18 × 16-bits (384 display characters; fixed; 2, variable; 382)

• 252 display positions (12 rows × 21 columns)

• 16-dot × 18-dot character resolution

• 16 different character sizes

• Eight character colors

• Vertical direction fade-in/fade-out control

• Eight colors for character and frame background

• Halftone control signal output; selectable for individual characters

• Synchronous polarity selector for H-sync and V-sync input

8-Bit Basic Timer

• Three selectable internal clock frequencies

• Watchdog or oscillation stabilization function

Timer/Counters

• One 8-bit timer/counter (T0) with three internal clocks or an external clock and interval timer mode or PWM mode.

• One general-purpose 8-bit timer/counters with interval timer mode (timer A)

A/D Converter

• Four analog input pins; 4-bit resolution

• 3.125 µs conversion time (8 MHz CPU clock)

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Oscillator Frequency

• 5 MHz to 8 MHz external crystal oscillator

• Maximum 8 MHz CPU clock

Operating Temperature Range

• – 20°C to + 85°C

Operating Voltage Range

• 4.5 V to 5.5 V

Package Type

• 42-pin SDIP

KS88C8424/C8432/P8432 PRODUCT OVERVIEW

BLOCK DIAGRAM

OSC

H-sync

V-sync

Vgreen

Vblue

Vblank

OSDHT

ADC0 ADC1

ADC2 ADC3

OUT

Vred

RESET

INT0 - INT3

Main

Osc

L-C Osc

On-

Screen

Display

4-Bit

ADC

P0.0 - P0.7

Port 0 Port 1

SAM87 Bus

Port I/O and Interrupt

Control

SAM87 CPU

24/32-KByte

ROM

SAM87 Bus

Port 2

P1.0 - P1.7

272-Byte Register

File

Port 3

Test

Timer A

Timer 0

PWM

Block

PWM

Counter

and Data

Capture

14-Bit

PWM

8-Bit

PWM

TO T0CK

CAPA

PWM0 PWM1

PWM2 PWM3 PWM4 PWM5

P2.0 - P2.7

Figure 1-1. Block Diagram

P3.0 - P3.1

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PRODUCT OVERVIEW KS88C8424/C8432/P8432

PIN ASSIGNMENTS

P2.5/PWM0 P2.1/PWM1 P2.2/PWM2 P2.3/PWM3 P2.4/PWM4 P2.0/PWM5

P2.6/T0

P1.7/T0CK P3.0/ADC0 P3.1/ADC1 P0.6/ADC2 P0.7/ADC3

TEST

P1.0/INT0 P1.1/INT1 P1.2/INT2 P1.3/INT3

P1.4 P1.5 P1.6

P2.7/OSDHT

1 2 3 4 5 6 7 8 9

KS88C8424/

C8432/P8432

42-PIN SDIP

12 13 14 15 16 17 18 19 20 21

(Top View)

42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22

P0.0 P0.1 P0.2 P0.3 P0.4 V

SS2

CAPA P0.5 V

RESET

OUT

SS1

OSC OSC V-sync H-sync Vblank Vred Vgreen Vblue

OUT IN

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Figure 1-2. KS88C8424/C8432/P8432 Pin Assignment Diagram

KS88C8424/C8432/P8432 PRODUCT OVERVIEW

PIN DESCRIPTIONS

Table 1-1. KS88C8424/C8432/P8432 Pin Descriptions

Pin Name Pin

Type

P0.0–P0.3 I/O General I/O port (4-bit), configurable for

digital input or n-channel open-drain, pushpull output. Pins can withstand up to 5 V loads.

P0.4–P0.5 General I/O port (2-bit), configurable for

digital input or push-pull output.

P0.6–P0.7 General I/O port (2-bit), configurable for

digital input or n-channel open-drain output. P0.6–P0.7 can withstand up to 5 V loads. Multiplexed for alternative use as external inputs, ADC2–ADC3.

P1.0–P1.3 I/O General I/O port (4-bit), configurable for

digital input or n-channel open-drain output. P1.0–P1.3 can withstand up to 6 V loads. Multiplexed for alternative use as external interrupt inputs, INT0–INT3.

P1.4–P1.5 General I/O port (2-bit), configurable for

digital input or n-channel open-drain output. P1.4–P1.5 can withstand up to 6 V loads. High current port(10mA)

P1.6–P1.7 General I/O port (2-bit), configurable for

digital input or push-pull output. Each pin has an alternative function. P1.7: T0CK (Timer 0 clock input)

P2.0–P2.7 I/O General I/O port (8-bit). Input/output mode

or n-channel open-drain, push-pull output mode are software configurable. Pins can withstand up to 5 V loads. Each pin has an alternative function. P2.0: PWM5 (8-bit PWM output) P2.1: PWM1 (14-bit PWM output) P2.2: PWM2 (8-bit PWM output) P2.3: PWM3 (8-bit PWM output) P2.4: PWM4 (8-bit PWM output) P2.5: PWM0 (14-bit PWM output) P2.6: T0 (Timer 0 PWM and interval output) P2.7: OSDHT (Halftone signal output)

P3.0–P3.1 I/O General I/O port (2-bit), configurable for

digital input or n-channel open-drain output. P3.0–P3.1 can withstand up to 5 V loads. Multiplexed for alternative use as external inputs ADC0–ADC1.

Pin Description Circuit

Type

2 39–42

3 38, 35

6 11–12

7 14–17

5 18–19

3 20, 8

2 1–7, 21

6 9–10

Numbers

Pins

(See pin

description)

ADC2–ADC3

INT0–INT3

T0CK

PWM0–

PWM5

T0, OSDHT

ADC0–ADC1

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PRODUCT OVERVIEW KS88C8424/C8432/P8432

Table 1-1. KS88C8424/C8432/P8432 Pin Descriptions (Continued)

Pin Name Pin

PWM0–

Type

O Output pin for 14-bit PWM circuit 2 1, 2 P2.5, P2.1

Pin Description Circuit

Type

Numbers

Pins

PWM1 PWM2–

PWM5

O Output pin for 8-bit PWM circuit 2 3–6 P2.2–P2.4,

P2.0

ADC0–ADC3 I Analog inputs for 4-bit A/D converter 6 9–12 P3.0–P3.1,

P0.6–P0.7 INT0–INT3 I External interrupt input pins 7 14–17 P1.0–P1.3 T0 O Timer 0 output (interval, PWM) 2 7 P2.6 T0CK I Timer 0 clock input 3 8 P1.7 OSDHT O Halftone control signal output for OSD 2 21 P2.7 Vblue, Vgreen

Vred, Vblank H-sync,

O Digital blue, green, red, and video blank

4 22–25 –

signal outputs for OSD

I H-sync, V-sync input for OSD 1 26, 27 –

V-sync OSCIN,

OSC

OUT

XIN, X

OUT

RESET

TEST –

I, O L-C oscillator pins for OSD clock frequency

– 28, 29 –

generation

I, O System clock pins – 31, 32 –

I System reset input pin 8 33 –

Test Pin (must be connected to VSS).

– 13 –

Factory test mode is activated when 12V is applied.

VDD, V V

SS2

SS1,

– Power supply pins – 34, 30, 37 –

CAPA I Input for capture A module 1 36 –

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KS88C8424/C8432/P8432 PRODUCT OVERVIEW

PIN CIRCUITS

Input

Noise

Filter

Figure 1-3. Pin Circuit Type 1 (V-Sync H-Sync, CAPA)

Data

I/O

Open-drain

Output

Disable

Input

Figure 1-4. Pin Circuit Type 2 (P2.0–P2.7, P0.0–P0.3, PWM0–PWM5, T0, OSDHT)

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