— RC circuit time constant

— Optional watchdog timer reset function from an

external pin

No. 6278-2/39

LC651154N, 651154F, 651154L, 651152N, 651152F, 651152L

Function Table

Parameter

LC651154N/1152N

LC651154F/1152F

LC651154L/1152L

ROM

4096

× 8 bits (1154N)

4096

× 8 bits (1154F)

4096

× 8 bits (1154L)

Memory

2048

× 8 bits (1152N)

2048

× 8 bits (1152F)

2048

× 8 bits (1152L)

RAM

256

× 4 bits (1154/1152N)

256

× 4 bits (1154/1152F)

256

× 4 bits (1154/1152L)

Instructions

Instruction set

80

80

80

Table reference

Supported

Supported

Supported

Interrupts

1 external, 1 internal

1 external, 1 internal

1 external, 1 internal

Timers

4-bit variable prescaler

4-bit variable prescaler

4-bit variable prescaler

On-chip functions

+ 8-bit timers

+ 8-bit timers

+ 8-bit timers

Stack levels

8

8

8

Standby function

Standby mode entered by the

Standby mode entered by the

Standby mode entered by the

HALT instruction supported

HALT instruction supported

HALT instruction supported

Number of ports

22 I/O port pins

22 I/O port pins

22 I/O port pins

Serial port

Input and output in 4 or 8 bit units

Input and output in 4 or 8 bit units

Input and output in 4 or 8 bit units

I/O voltage handling capability

15 V max.

15 V max.

15 V max.

I/O ports

Output current

10 mA typ. 20 mA max.

10 mA typ. 20 mA max.

10 mA typ. 20 mA max.

I/O circuit types

Open drain (n-channel) and pull-up resistor output options can be specified in 1-bit units

Output level at reset

A high or low level output can be selected in port units (ports C and D only)

Square wave output

Supported

Supported

Supported

Minimum cycle time

Characteristics

Supply voltage

3 to 6 V

2.5 to 6 V

2.2 to 6 V

Current drain

1.5 mA typ.

2 mA typ.

1.5 mA typ.

Oscillator element

RC (800/400 kHz typ.)

Ceramic 4 MHz

RC (400 kHz typ.)

Oscillator

Ceramic (400 k, 800 k, 1 MHz, 4 MHz)

Ceramic (400 k, 800 k, 1 MHz, 4 MHz)

Divider circuit option

1/1, 1/3, 1/4

1/1

1/1, 1/3, 1/4

Other items

Package

DIP30S-D, MFP30S, SSOP30

DIP30S-D, MFP30S, SSOP30

DIP30S-D, MFP30S, SSOP30

Note: Recommendations for oscillator elements and oscillator circuit constants will be announced as the recommended circuits for these ICs are determined.

Verify the progress of these developments periodically.