Samsung KS88C4404 Datasheet

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

1PRODUCT OVERVIEW

SAM8 PRODUCT FAMILY

Samsung's new SAM8 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.

A dual address/data bus architecture and a large number of bit- or nibble-configurable I/O ports provide a flexible
programming environment for applications with varied memory and I/O requirements.

Timer/counters with selectable operating modes are included to support real-time operations. Many SAM8
microcontrollers have an external interface that provides access to external memory and other peripheral devices.

The 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 six CPU clocks) can be assigned to
specific interrupt levels.

KS88C4404 MICROCONTROLLER

The KS88C4404 single-chip microcontroller is fabricated using a highly advanced CMOS process. Its design is
based on the powerful SAM8 CPU core. Stop and Idle power-down modes were implemented to reduce power
consumption. The size of the internal register file is logically expanded, increasing the addressable on-chip
register space to 1040 bytes. A flexible yet sophisticated external interface is used to access up to 64-Kbytes of
program and data memory. The KS88C4404 is a versatile microcontroller that is ideal for use in a wide range of
general-purpose applications such as CD-ROM/DVD-ROM drives.

Using the SAM8 modular design approach, the following peripherals were integrated with the SAM8 CPU core:

1–1

PRODUCT OVERVIEW KS88C4404 MICROCONTROLLER

— Six configurable 8-bit general I/O ports
— One 8-bit n-channel, open-drain output port
— One 8-bit input port for A/D converter input or

digital input

— Full-duplex serial data port with one

synchronous and three asynchronous (UART)
operating modes

— Two 8-bit timers with interval timer or PWM

mode

— Two 16-bit timer/counters with four

programmable operating modes

— Two programmable 8-bit PWM modules with

corresponding output pins
— One 8-bit capture module with CAP input pin
— A/D converter with 8 selectable input pins

The KS88C4404 is a versatile microcontroller that is
ideal for use in a wide range of general-purpose
ROM-less applications such as CD-ROM/DVD-ROM
drivers.

Figure 1–1. KS88C4404 Microcontroller

1–2

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

FEATURES

CPU

• SAM8 CPU core

Memory

• 1040-byte of internal register file

• 4-kbyte internal program memory area

External Interface

• 64-Kbyte external data memory area

• 64-Kbyte external program memory (ROMless)

• 60-Kbyte external program memory (normal)

Instruction Set

• 78 instructions

• IDLE and STOP instructions

Instruction Execution Time

• 240 ns at 25 MHz f

Interrupts

• 20 interrupt sources and 19 interrupt vectors

• Seven interrupt levels

• Fast interrupt processing (level0 and 3-7 only)

(minimum)

OSC

General I/O

• Six 8-bit general I/O ports (ports 0,1,2,3,4, and

5)

• One 8-bit n-channel, open-drain output port
(port 6)

• One 8-bit input port (for ADC input or port 7
digital input)

Serial Port

• Full-duplex serial data port (UART)

• Four programmable operating modes

PWM and Capture

• Two output channels (PWM0, PWM1)

• 8-bit resolution with 2-bit prescaler

• 97.66-kHz frequency (25-MHz CPU clock)

• Capture module with CAP input pin

Analog-to-Digital Converter

• Eight analog input pins

• 8-bit conversion resolution

• 7.68-µs conversion speed (25-MHz CPU clock)

Operating Temperature Range

• – 20°C to + 85°C

Timer/Counters

• Two 8-bit timers with interval timer or PWM
mode (timers A and B)

• Two 16-bit timer/counters with four
programmable operating modes (timers C and
D)

Operating Voltage Range

• 4.5 V to 5.5 V

Package Type

• 80-pin QFP, 80–pin TQFP

1–3

PRODUCT OVERVIEW KS88C4404 MICROCONTROLLER

BLOCK DIAGRAM

EXTERNAL ADDRESS/DATA BUS

P2.6
P2.7

TA
TB

TCCK
TDCK

TCG
TDG

RxD

TxD

RESET

EA

PORT2

TIMERS
A and B

TIMERS
C and D

SERIAL

PORT

P0.0–P0.7

(A8–A15)

PORT 0

P1.0–P1.7

(AD0–AD7)

PORT 1 PORT 2

SAM8 BUS

PORT I/O & INTERRUPT

CONTROL

SAM8 CPU

1040-BYTE

REGISTER FILE

P2.0–P2.5

(Control Signal)

PORT 3

PORT 4

PORT 5

PORT 6 P6.0–P6.7

P3.0–P3.7

P4.0–P4.7

P5.0–P5.3

P5.4–P5.7

1–4

SS

AV

AVREF

A/D

CONVERTER

ADC0 /P7.0 –

ADC7 /P7.7

Figure 1–2. KS88C4404 Block Diagram

SAM8 BUS

PWM

MODULE

PWM0 PWM1

VDD1

SS1

,V

DD2

V

,VSS2

CAPTURE (P3.6)

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

PIN ASSIGNMENTS

P1.7 / AD7

P1.6 / AD6

P1.5 / AD5

P1.4 / AD4

P1.3 / AD3

P1.2 / AD2

P1.1 / AD1

P1.0 / AD0

V

P0.7 / A15

P0.6 / A14

P0.5 / A13

P0.4 / A12

P0.3 / A11

P0.2 / A10

78

79

80

77

76

75

DD1

(int.)

74

73

72

71

70

69

68

67

66

EA

65

P0.1 / A9
P0.0 / A8

P5.7
P5.6
P5.5
P5.4
P5.3
P5.2
P5.1
P5.0

VDD2 (ext.)

P2.7 / TB
P2.6 / TA

P2.5 / PM
P2.4 / MR
P2.3 / DM

P2.2 / MW

P2.1 / DS

P2.0 / AS

RxD

TxD
PWM1
PWM0

P3.0 / TCCK / INT0

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

25

26

27

KS88C4404

80-QFP

(TOP VIEW)

31

30

29

28

32

33

34

35

36

37

38

39

40

64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41

RESET

NC
AS
VSS1 (int.)
XOUT

IN

X
P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
P7.7 / ADC7
P7.6 / ADC6
P7.5 / ADC5
P7.4 / ADC4
P7.3 / ADC3
AVSS
P7.2 / ADC2
P7.1 / ADC1
AVREF
P7.0 / ADC0

P3.1 / TDCK / INT1

WAIT

SS2

(ext.)

P4.5 / INT9

P4.4 / INT8

P4.3 / INT7

P4.2 / INT6

P4.1 / INT5

P4.0 / INT4

V

P3.7 /

P3.6 / CAP

P3.5

P3.4

P3.3 / TDG / INT3

P3.2 / TCG / INT2

Figure 1–3. KS88C4404 Pin Assignments

P4.7 / INT11

P4.6 / INT10

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PRODUCT OVERVIEW KS88C4404 MICROCONTROLLER

PIN ASSIGNMENTS (Continued)

P1.7 / AD7

P1.6 / AD6

P1.5 / AD5

P1.4 / AD4

P1.3 / AD3

P1.2 / AD2

P1.1 / AD1

P1.0 / AD0

V

P0.7 / A15

P0.6 / A14

P0.5 / A13

P0.4 / A12

P0.3 / A11

P0.0 / A8

V

(ext.

DD2

P2.7 / TB
P2.6 / TA

P5.7
P5.6
P5.5
P5.4
P5.3
P5.2
P5.1
P5.0

PM
MR
DM

MW

DS
AS

RxD

TxD

P0.2 / A10

P0.1 / A9

76

77

78

79

80

1
2
3
4
5
6
7
8
9
10

)

11
12
13
14
15
16
17
18
19
20

25

24

23

22

21

DD1

(int.)

72

73

74

75

KS88C4404

80-TQFP

(TOP VIEW)

29

28

27

26

71

30

70

31

69

32

68

33

67

34

66

35

65

36

EA

64

37

63

38

RESET

AS

NC

61

62

Vss1 (int.)

60

X

OUT

X

IN

P6.0
P6.1
P6.2
P6.3
P6.4
P6.5
P6.6
P6.7
P7.7 / ADC7
P7.6 / ADC6
P7.5 / ADC5
P7.4 / ADC4
P7.3 / ADC3
AV

SS

P7.2 / ADC2
P7.1 / ADC1
AV

REF

39

59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41

40

1–6

P4.3 / INT7

P4.2 / INT6

P4.1 / INT5

P4.0 / INT4

VSS2 (ext.)

P3.7 / WAIT

P3.6 / CAP

P3.5

P3.4

P3.3 / TDG / INT3

P3.2 / TCG / INT2

P3.1 / TDCK / INT1

P3.0 / TCCK / INT0

PWM0

PWM1

Figure 1–4. KS88C4404 Pin Assignments

P4.7 / INT11

P4.6 / INT10

P4.5 / INT9

P4.4 / INT8

P7.0 / ADC0

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

PIN DESCRIPTIONS

Table 1–1. KS88C4404 Pin Descriptions

Pin

Name

Pin

Type

Pin

Description

P0.0 - P0.7 I/O Nibble programmable port; input or output mode

selected by software; Schmitt trigger input or push­pull, open-drain output with software assignable
pull-ups; alternately configurable as external
interface address lines A8 - A15.

P1.0 - P1.7 I/O Same general characteristics as port 0; alternately

configurable as external interface address/data lines
AD0 - AD7.

P2.0 - P2.7 I/O General I/O port with Schmitt trigger input or push-

pull output. bit programmable;
P2.0 / Address Strobe (AS)
P2.1 / Data Strobe (DS)
P2.2 / Memory Write (MW)
P2.3 / Data Memory select (DM)
P2.4 / Memory Read (MR)
P2.5 / Program Memory select (PM)
P2.6 / timer A output (TA)
P2.7 / timer B output (TB)

P3.0 - P3.7 I/O General I/O port with bit programmable pins.

Schmitt trigger input or push-pull output with
software assignable pull-ups. Input or output mode
is selectable by software. P3.0 - P3.3 are alternately
used as inputs for external interrupts INT0-INT3,
respectively (with noise filters and interrupt control):
P3.0 / timer C clock input (TCCK) / INT0
P3.1 / timer D clock input (TDCK) / INT1
P3.2 / timer C gate input (TCG) / INT2
P3.3 / timer D gate input (TDG) / INT3
P3.6 / Capture data input (CAP)
P3.7 / for slow memory interface

P4.0 - P4.7 I/O General I/O port with bit programmable pins.

Schmitt trigger input or push-pull, open-drain output
with software assignable pull-ups. Input or output
mode is selectable by software. P4.0-P4.7 can
alternately be used as inputs for external interrupts
INT4-INT11, respectively (with noise filters and
interrupt control)

Circuit

Type

3 2, 1,

QFP Pin
Number

Share

A8 - A15

80-75

3 73-66 AD0 - AD7

5 19 - 12

AS, DS, MW,

DM, MR,

PM, TA, TB

4 24-31 (See pin

description)

4 33-40 INT4 -

INT11

Pins

1–7

PRODUCT OVERVIEW KS88C4404 MICROCONTROLLER

Table 1–1. KS88C4404 Pin Descriptions (Continued)

Pin

Name

P5.0–P5.7

P6.0–P6.7

ADC0–ADC7

AV

, AV

REF

SS

RxD

TxD

PWM0,
PWM1

TA, TB
INT0–INT11

TCCK, TDCK
TCG, TDG
CAP

WAIT

RESET

EA

V

, V

DD1

SS1

V

, V

DD2

SS2

XIN, X

OUT

AS
NC

Pin

Type

I/O

General I/O port with nibble programmable

Pin

Description

Circuit

Type

QFP Pin
Number

3 10–3 —
pins. Schmitt trigger input or push-pull,
open-drain output mode. Mode and pull-ups
are assigned by software.

O

N-channel, open-drain output port; the pin

8 58–51 —
circuits can withstand loads up to 9 volts.

I

Analog input pins for A/D converter module.
Alternatively used as general-purpose

2 41, 43–44,

46–50

P7.0–P7.7

digital input port 7.

—

I/O

A/D converter reference voltage and ground
Serial data RxD pin for receive input and

— 42, 45 —

6 20 —
transmit output (mode 0)

O

Serial data TxD pin for transmit output and

7 21 —
shift clock input (mode 0)

O

Pulse width modulation output pins

O

Output pins for timer A and timer B

I

External interrupt input pins

I

External clock input for timer C and timer D

I

Gate input pins for timer C and timer D

I

Capture data input for PWM module

I

Input pin for the slow memory timing signal

7 23, 22 —

5 13, 12 P2.6, P2.7

4 24–27,

33–40

P3.0–P3.3,

P4.0–P4.7
4 24, 25 P3.0, P3.1
4 26, 27 P3.2, P3.3
4 30 P3.6
4 31 P3.7

from the external interface

I

System reset pin (pull-up resistor: 220 kΩ)

I

External access (EA) pin with two modes:

1 64 —

— 65 —
5 V input: normal ROM-less operation with
external interface (0 V is not allowed)
9 V–10 V input: for factory test mode

—

Power input pins for CPU operation

— 74, 61 —
(internal)

—

Power input pins for port output (external)

—

Main oscillator pins

O

Address strobe

— 11, 32 —

— 59, 60 —

7 62 —

— No connection pins (connect to VSS) — 62, 63 —

Share

Pins

NOTE VDD1 must be connected to VDD2 in users application circuit, VSS1 & VSS2 also.

1–8

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

PIN CIRCUITS

Table 1–2. Pin Circuit Assignments for the KS88C4404

Circuit Number Circuit Type KS88C4404 Assignments

1 Input
2 Input
3 I/O
4 I/O
5 I/O
6 I/O
7 Output
8 Output

RESET pin

A/D converter input pins, ADC0–ADC7
Port 0, 1, and 5
Ports 3 and 4, TCCK, TDCK, TCG, TDG, CAP, WAIT, INT0–INT11
Port 2 (AS, DS, MW, DM, MR, PM, TA,TB)
Serial port RxD pin
Serial port TxD pin, PWM0, PWM1 and AS
Port 6 (n-channel, open-drain output with high current capability)

1–9

PRODUCT OVERVIEW KS88C4404 MICROCONTROLLER

V

DD

PULL-UP
RESISTOR
(Typical 230 kΩ)

INPUT

Figure 1–5. Pin Circuit Type 1 ( )

INPUT
BUFFER

IN

V

+
–

REF

ADC
LOGIC

Figure 1–6. Pin Circuit Type 2 (ADC0–ADC7)

1–10

KS88C4404 MICROCONTROLLER PRODUCT OVERVIEW

V

DD

PULL-UP

RESISTOR

(Ty pical 46 kΩ)

PULL-UP

ENABLE

DATA

OPEN­DRAIN

OUTPUT
DISABLE

INPUT

V

DD

IN / OUT

V

SS

Figure 1–7. Pin Circuit Type 3 (Ports 0,1, and 5)

1–11