HYNIX HMS77C1000A, HMS77C1001A User Guide

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8-BIT SINGLE-CHIP MICROCONTROLLERS

HMS77C1000A
HMS77C1001A

User’s Manual

(Ver. 2.0)

Version 1.1
Published by

MCU Application Team

2001 Hynix Semiconductor All right reserved.



Additional information of this manual may be served by Hynix Semiconductor offices in Korea or Distributors and Representatives listed
at address directory.

Hynix Semiconductor reserves the right to make changes to any information here in at any time without notice.
The information, diagrams and other data in this manual are correct and reliable; however, Hynix Semiconductor is in no way responsible

for any violations of patents or other rights of the third party generated by the use of this manual.

HMS77C1000A/HMS77C1001A

Contents of Table

OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . 1

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . 2

PIN ASSIGNMENT . . . . . . . . . . . . . . . . . . . 3

PACKAGE DIAGRAM . . . . . . . . . . . . . . . . . 4

PIN FUNCTION . . . . . . . . . . . . . . . . . . . . . . 6

PORT STRUCTURES . . . . . . . . . . . . . . . . . 7

ELECTRICAL CHARACTERISTICS . . . . . . 9

Absolute Maximum Ratings . . . . . . . . . . . . . . . 9

Recommended Operating Conditions . . . . . . . 9

DC Characteristics (1). . . . . . . . . . . . . . . . . . . 10

DC Electrical Characteristics (2) . . . . . . . . . . 11

AC Electrical Characteristics (1) . . . . . . . . . . 12

AC Electrical Characteristics (2) . . . . . . . . . . 13

Typical Characteristics . . . . . . . . . . . . . . . . . . 14

ARCHITECTURE . . . . . . . . . . . . . . . . . . . 17

CPU Architecture . . . . . . . . . . . . . . . . . . . . . . 17

MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Program Memory . . . . . . . . . . . . . . . . . . . . . . 18

Data Memory . . . . . . . . . . . . . . . . . . . . . . . . . 18

Special Function Registers. . . . . . . . . . . . . . 19

I/O PORTS . . . . . . . . . . . . . . . . . . . . . . . . . 24

Port RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Port RB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

I/O Interfacing . . . . . . . . . . . . . . . . . . . . . . . . .24

I/O Successive Operations . . . . . . . . . . . . . . .24

TIMER0 MODULE AND TMR0 REGISTER 26

Timer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Counter Mode . . . . . . . . . . . . . . . . . . . . . . . .27

Using Timer0 with an External Clock . . . . . . . 28

Prescaler . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

CONFIGURATION AREA . . . . . . . . . . . . . 30

OSCILLATOR CIRCUITS . . . . . . . . . . . . . 31

XT, HF or LF Mode . . . . . . . . . . . . . . . . . . . .31

RC Oscillation Mode . . . . . . . . . . . . . . . . . . .31

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Power-On Reset (POR) . . . . . . . . . . . . . . . . . 34

Internal Reset Timer (IRT) . . . . . . . . . . . . . . . 36

WATCHDOG TIMER (WDT) . . . . . . . . . . . 37

WDT Period . . . . . . . . . . . . . . . . . . . . . . . . . .37

WDT Programming Considerations . . . . . . . . 37

Power-Down Mode (SLEEP) . . . . . . . . . . 38

SLEEP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Wake-up From SLEEP . . . . . . . . . . . . . . . . . . 39

Minimizing Current Consumption . . . . . . . . . . 39

TIME-OUT SEQUENCE AND POWER DOWN

STATUS BITS (TO/PD) . . . . . . . . . . . . . 41

POWER FAIL DETECTION PROCESSOR 42

Oct. 2001 Ver. 2.0

HMS77C1000A/HMS77C1001A

HMS77C1000A / HMS77C1001A

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

1. OVERVIEW

1.1 Description

The HMS77C1000A and HMS77C1001 A are an advanced CMOS 8-bit mic rocontroller with 0.5K/1K words(12-bit) of
EPROM. The Hynix Semiconductor HMS77C1000A and HMS77C1001A are a powerful microcontroller which provides a
high flexibility and cost effective solution to many small applications. The HMS77C1000 A and HMS77C10 01A provide t he
following standard features: 0.5K/1K words of EPROM, 25 bytes of RAM, 8-bit timer/counter, power-on reset, on-chip os­cillator and clock circuitry. In addition, the HMS77C1000A and HMS77C1001A supports power saving modes to reduce
power consumption.

Device name ROM Size RAM Size Package

HMS77C1000A 0.5K words(12-bit) 25 bytes 18 PDIP, SOP or 20 SSOP
HMS77C1001A 1K words(12-bit) 25 bytes 18 PDIP, SOP or 20 SSOP

1.2 Features

• High-Performance RISC CPU:

- 12-bit wide instructions and 8-bit wide data path

- 33 single word instructions

- 0.5K/1K words on-chip program memory

- 25 bytes on-chip data memory

- Minimum instruction execution time
200ns @20MHz

- Operating speed: DC - 20 MHz clock input

- Seven special function hardware registers

- Two-level hardware stack

• Peripheral Features:

- Twelve programmable I/O lines

- One 8-bit timer/counter with 8-bit programmable
prescaler

- Power-On Reset (POR)

- Power Fail Detector : noise immunity circuit
2 level detect ( 2.7V, 1.8V )

- Internal Reset Timer (IRT)

- Watchdog Timer (WDT) with on-chip RC oscilla­tor

- Programmable code-protection

- Power saving SLEEP mode

- Selectable oscillator options: Configuration word

RC: Low-cost RC oscillator (200KHz~4MHz)
XT: Standard crystal/resonator (455KHz~4MHz)
HF: High-speed crystal/resonator (4~20MHz)
LF: Power saving, low-frequency crystal/resonator

(32~200KHz)

• CMOS Technology:

- Low-power, high-speed CMOS EPROM technol­ogy

- Fully static design

- Wide-operating range:

2.5V to 5.5V @ RC, XT, LF

4.5V to 5.5V @ HF

Oct. 2001 Ver. 2.0 1

HMS77C1000A/HMS77C1001A

2. BLOCK DIAGRAM

RESET

Xin

Xout

V

DD

V

SS

Power
Supply

OPTION

Power Fail Detector

System controller

Clock Generator

Timing Control

Configuration Word

STATUS

RA RB

RA0
RA1
RA2
RA3

ALU

W

Watch-dog

Timer

TRISA

8-bit

Timer/

Counter

WDT/
TMR0

Prescaler

EC0

Data

Memory

WDT time out

STACK 1
STACK 2

RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7

TRISB

PC

Program

Memory

Instruction

Decoder

2 Oct. 2001 Ver. 2.0

3. PIN ASSIGNMENT

HMS77C1000A/HMS77C1001A

18 PDIP or SOP

RESET

RESET

RA2

RA3

EC0

/V

V

RB0

RB1

RB2

RB3

RA2

RA3

EC0

/V

V

V

RB0

RB1

RB2

RB3

1

2

3

PP

SS

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

RA1

RA0

Xin

Xout

V

DD

RB7

RB6

RB5

RB4

20 SSOP

1

2

3

PP

SS

SS

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

RA1

RA0

Xin

Xout

V

DD

V

DD

RB7

RB6

RB5

RB4

Oct. 2001 Ver. 2.0 3

HMS77C1000A/HMS77C1001A

4. PACKAGE DIAGRAM

18 PDIP

unit: inch

MAX

MIN

TYP 0.300

0.925

0.895

MIN 0.020

MAX 0.180

0.120

0.140

0.022

0.015

0.065

0.045

TYP 0.10

0 ~ 15°

0.270

0.245

5

1

0

.

0

8

0

0

.

0

18 SOP

0.292

0.299

0.461

0.451

0.0115

0.104

0.097

0.029

0.014

TYP 0.050

0.410

0.400

0.005

0 ~ 8°

0.0125

0.0091

0.040

0.024

4 Oct. 2001 Ver. 2.0

20 SSOP

HMS77C1000A/HMS77C1001A

unit: inch

MAX

MIN

0.205

0.212

0.289

0.278

0.008

0.078

0.068

0.015

0.010

TYP 0.0256

0.311

0.301

0.002

0.037

0.008

0.004

0.025

0 ~ 8°

Oct. 2001 Ver. 2.0 5

HMS77C1000A/HMS77C1001A

5. PIN FUNCTION

V

: Supply voltage.

DD

V

: Circuit ground.

SS

RESET
X

: Reset the MCU.

: Input to the inverting oscillator amp lifier and input to

IN

the internal main clock operating circuit.

X

: Output from the inverting oscillator amplifier.

OUT

RA0~RA3

: RA is an 4-bit, CMOS, bidirectional I/O port.

RA pins can be used a s ou tpu ts or i npu ts acc ordi ng t o “0 ”
or “1” written the their Port Direction Register(TRISA).

RB0~RB7

: RB is a 8-bit, CMOS, bidirectional I/O port.
RB pins can be used as outputs or inputs according to “0”
or “1” written the their Port Direction Register(TRISB).

EC0

: EC0 is an external clock input to Timer0. It should

be tied to V

or VDD, if not in use, to reduce current con-

SS

sumption.

PIN NAME

V

DD

V

SS

RESET

X

IN

X

OUT

RA0 17 19
RA1 18 20
RA2 1 1
RA3 2 2
RB0 6 7
RB1 7 8
RB2 8 9
RB3 9 10
RB4 10 11
RB5 11 12
RB6 12 13
RB7 13 14

EC0 3 3

DIP, SOP

Pin No.

14 15,16

55,6

44

16 18

15 17

SSOP

Pin No.

In/Out

Input

Levels

P­P-

IST

IST

O-

I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL
I/O TTL

IST

Function

Supply voltage
Circuit ground
Reset signal input/programming voltage input. This pin is an active low

reset to the device. Voltage on the RESET
avoid unintended entering of programming mode.

Oscillator crystal input/external clock source input
Oscillator crystal output. Connects to crystal or resonator in crystal oscilla-

tor mode. In RC mode, X
quency of X

4-bit bi-directional I/O ports

8-bit bi-directional I/O ports

Clock input to Timer0. Must be tied to VDD or VSS, if not in use, to reduce
current consumption.

, and denotes the instruction cycle rate.

IN

pin outputs CLKOUT which has 1/4 the fre-

OUT

pin must not exceed VDD to

TABLE 5-1 PINOUT DESCRIPTION

Legend : I =input, O = output, I/O = input/output, P = power, - = Not used, TTL = TTL input, ST = Schmitt Trigger input

6 Oct. 2001 Ver. 2.0

6. PORT STRUCTURES

• RESET

Internal RESET

• Xin, Xout

( XT, HF, LF Mode )

EN ( XT, HF, LF )

HMS77C1000A/HMS77C1001A

V

SS

V

DD

( RC Mode )

To Internal Clock

To Internal Clock

Amplifier varies with
the oscillation mode

EN ( RC )

÷

÷

4

÷ ÷

Internal
Capacitance ( appx. 6pF )

Xout

V

R

SS

F

Xin

V

DD

Xout

V

SS

Xin

Oct. 2001 Ver. 2.0 7

HMS77C1000A/HMS77C1001A

• RA0~3/RB0~7

V

Data Reg.

Data Bus

Direction Reg.

Data Bus

Data Bus

Read

•EC0

DD

V

SS

Timer Counter Clock Input

V

DD

EC0

V

SS

8 Oct. 2001 Ver. 2.0

7. ELECTRICAL CHARACTERISTICS

7.1 Absolute Maximum Ratings

HMS77C1000A/HMS77C1001A

Supply voltage..............................................-0 to +7.5 V

Storage Temperature ................................-65 to +125 °C

Voltage on RESET
Voltage on any pin with respect to V
Maximum current out of V
Maximum current into V
Maximum output current sunk by (I
Maximum output current sourc ed by (I

with respect to VSS.......0.3 to 13.5V

.-0.3 to VDD+0.3

SS

pin........................150 mA

SS

pin ..........................100 mA

DD

per I/O Pin)25 mA

OL

per I/O Pin)

OH

...............................................................................20 mA

7.2 Recommended Operating Conditions

Parameter Symbol Condition

f

Supply Voltage

Operating Frequency

Operating Temperature

T

V

f

XIN

OPR

DD

XIN

f

XIN

RC Mode 0.2 4

HF Mode 4 20
LF Mode 32 200 KHz

=20MHz

=4MHz

Maximum current (ΣI
Maximum current (ΣI

Note: Stresses above those listed under “Absolute Maxi-

mum Ratings” may cause permanent damage to the
device. This is a stress rati ng only and functi onal op­eration of the device at any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods
may affect device reliability.

Min. Max.

4.5 5.5

2.5 5.5

-40 85

)....................................120 mA

OL

)......................................80 mA

OH

Specifications

Unit

V

MHzXT Mode 0.455 4

C

°

Oct. 2001 Ver. 2.0 9

HMS77C1000A/HMS77C1001A

7.3 DC Characteristics (1)

(TA=-40

•

C~+85

°°°°

C)

°°°°

Specification

Parameter Symbol Test Condition

Min

Typ

1

Max

Supply Voltage

V

DD

HF 4.5 5.5

V

start voltage to ensure

DD

Power-On Reset
VDD rise rate
RAM Data Retention

Voltage

V

S

POR

VDD

V

DR

-

2

0.05 - - V/mS

-1.5-V

V

SS

-V

Power Fail Detection

V

PFD

Low Level - 1.8 -

Supply Current

HF

4

I

DD

XT, RC

LF

Power Down Current

1. Data in “Typ” column is at 25°C unless otherwise stated. These parameters are for de sign guidance only and are not tested.

2. This parameter is characterized but not tested.

3. The test conditions for all IDD measurements in NOP execution are:
= external square wave; all I/O pins tristated, pulled to VSS, EC0 = VDD, RESET = VDD; WDT disabled/enabled as specified.

X

IN

4. Does not include current through R

5. Power down current is measured with the part in SLEEP mode, with all I/O pins in hi-impedance state and tied to VDD and VSS as

like measurement conditions of supply current.

I

PD

XIN = 4MHz, VDD = 5V

3

XIN = 20MHz, VDD = 5V
XIN = 32KHz, VDD = 3V, WDT Disabled
VDD = 3V, WDT Enabled

5

VDD = 3V, WDT Disabled

The current through the resistor can be estima te d by the form ula; IR = VDD/2R

ext.

-1.83.3mA

-9.020mA

-1740uA

-414

-0.45

ext

(mA)

Unit

VXT, RC, LF 2.5 5.5

VNormal Level - 2.7 -

uA

10 Oct. 2001 Ver. 2.0

7.4 DC Electrical Characteristics (2)

HMS77C1000A/HMS77C1001A

(TA=-40

•

C~+85

°°°°

C)

°°°°

Specification

Parameter Symbol Test Condition

Min

Typ

1

Max

Input High Voltage

I/O Ports (TTL)

RESET, EC0, (ST)

XIN (ST)
XIN (ST)

0.25V

V

IH

RC only
XT, HF, LF

DD

0.85V

0.85V

0.7V

DD
DD

DD

+0.8

V

DD

Input Low Voltage

I/O Ports (TTL)

RESET, EC0, (ST)

XIN (ST)
XIN (ST)

Hysteresis of Schmitt
Trigger Inputs

Input Leakage Current

V

V

HYS

I

V

IL

SS

RC only
XT, HF, LF

DD

2

0.15V

VIN = VDD or V
XT, HF, LF -3.0 0.5 3.0

L

SS

0.15V

0.15V

0.15V

0.3V

DD
DD
DD

DD

Other Pins -1.0 0.2 1.0

Output High Voltage

I/O Ports

X

OUT

V

IOH = -5.0mA, VDD = 4.5V VDD - 0.9 V

OH

IOH = -0.5mA, VDD = 4.5V, RC osc.

DD

Output Low Voltage

I/O Ports

X

OUT

1. Data in “Typ” column is at 25°C unless otherwise stated. These parameters are for de sign guidance only and are not tested.

2. This parameter are characterized but no t teste d.

V

IOL = 8.0mA, VDD = 4.5V V

OL

IOL = 0.6mA, VDD = 4.5V, RC osc.

SS

0.8

Unit

V

V

V

uAXIN (ST)

V

V

Oct. 2001 Ver. 2.0 11