DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD754144, 754244
4-BIT SINGLE-CHIP MICROCONTROLLERS
DESCRIPTION
The
µ
PD754244 is a 4-bit single-chip microcontroller which incorporates the EEPROM
TM
for key-less entry
application.
It incorporates a 16
×
8-bit EEPROM, a 4-Kbyte mask ROM to store software, a 128
×
4-bit RAM to store the
processing data, a processing CPU, and a carrier generator which easily outputs waveforms for infrared remote
controller.
The details of functions are described in the following user’s manual. Be sure to read it before designing.
µ
PD754144, 754244 User’s Manual: U10676E
FEATURES
•
•
•
•
•
•
•
On-chip EEPROM: 16
×
8 bits (mapped to the data memory)
On-chip key return reset function for key-less entry
System clock oscillation circuit
•
µ
PD754144: RC oscillator (external resistor and capacitor)
•
µ
PD754244: Crystal/ceramic oscillator
Low-voltage operation: V
DD
= 1.8 to 6.0 V
Timer function (4 channels)
• Basic interval timer/watchdog timer: 1 channel
• 8-bit timer counter
: 3 channels
On-chip memory
• Program memory (ROM)
4096
×
8 bits
• Data memory (static RAM)
128
×
4 bits
Instruction execution time variable function suited for power saving.
•
µ
PD754144:
4, 8, 16, 64
µ
s (at fcc = 1.0-MHz operation)
•
µ
PD754244:
0.95, 1.91, 3.81, 15.3
µ
s (at fx = 4.19-MHz operation)
0.67, 1.33, 2.67, 10.7
µ
s (at fx = 6.0-MHz operation)
APPLICATIONS
Automotive appliances such as key-less entry, compact data carrier, etc.
Unless contextually excluded, references in this data sheet to the
µPD754244
(crystal/ceramic oscillation: f
X
)
mean the
µ
PD754144.
The
µ
PD754144 and
µ
PD754244 differ in the notation of their RC oscillation: whenever f
X
(RC oscillation notation
for
µ
PD754244) is described, f
CC
should be substituted for the
µ
PD754144.
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. U10040EJ2V1DS00 (2nd edition)
Date Published August 2005 N CP(K)
Printed in Japan
The mark
shows major revised points.
1995
µ
PD754144, 754244
ORDERING INFORMATION
Part Number
Package
20-pin plastic SOP (300 mil, 1.27-mm pitch)
20-pin plastic SOP (300 mil, 1.27-mm pitch)
20-pin plastic shrink SOP (300 mil, 0.65-mm pitch)
20-pin plastic shrink SOP (300 mil, 0.65-mm pitch)
20-pin plastic SOP (300 mil, 1.27-mm pitch)
20-pin plastic SOP (300 mil, 1.27-mm pitch)
20-pin plastic shrink SOP (300 mil, 0.65-mm pitch)
20-pin plastic shrink SOP (300 mil, 0.65-mm pitch)
µ
PD754144GS-xxx-BA5
★
★
★
★
µ
PD754144GS-xxx-BA5-A
µ
PD754144GS-xxx-GJG
µ
PD754144GS-xxx-GJG-A
µ
PD754244GS-xxx-BA5
µ
PD754244GS-xxx-BA5-A
µ
PD754244GS-xxx-GJG
µ
PD754244GS-xxx-GJG-A
Remarks 1.
Products with "-A" at the end of the part number are lead-free products.
2.
×××
indicates ROM code suffix.
2
Data Sheet U10040EJ2V1DS
µ
PD754144, 754244
Functional Outline
Parameter
Instruction execution time
µ
PD754144
• 4, 8, 16, 64
µ
s
(at fcc = 1.0-MHz operation)
µ
PD754244
• 0.95, 1.91, 3.81, 15.3
µ
s
(at fx = 4.19-MHz operation)
• 0.67, 1.33, 2.67, 10.7
µ
s
(at fx = 6.0-MHz operation)
On-chip
memory
Mask ROM
RAM
EEPROM
4096
×
8 bits (0000H-0FFFH)
128
×
4 bits (000H-07FH)
16
×
8 bits (400H-41FH)
RC oscillator
(External resistor and capacitor)
• 4-bit operation: 8
×
4 banks
• 8-bit operation: 4
×
4 banks
4
9
13
56/fcc
2
9
/fcc
2 /fx, 2 /fx (selected by mask option)
2
20
/fx, 2
17
/fx, 2
15
/fx, 2
13
/fx
(selected by the setting of BTM)
17
15
System clock oscillator
Crystal/ceramic oscillator
General-purpose register
Input/output
port
CMOS input
CMOS input/output
Total
On-chip pull-up resistor can be specified by mask option.
On-chip pull-up resistor connection can be specified by means of software.
Start-up time after reset
Stand-by mode release time
Timer
4 channels
• 8-bit timer counter
(can be used as 16-bit timer counter)
• Basic interval/watchdog timer
: 3 channels
: 1 channel
Bit sequential buffer
Vectored interrupt
Test input
Standby function
Operating ambient temperature
Operating supply voltage
Package
16 bits
External: 1, Internal: 5
External: 1 (key return reset function available)
STOP/HALT mode
T
A
= –40 to +85
°C
V
DD
= 1.8 to 6.0 V
• 20-pin plastic SOP (300 mil, 1.27-mm pitch)
• 20-pin plastic shrink SOP (300 mil, 0.65-mm pitch)
Data Sheet U10040EJ2V1DS
3
µ
PD754144, 754244
CONTENTS
1. PIN CONFIGURATION (TOP VIEW) .................................................................................................... 6
2. BLOCK DIAGRAM ................................................................................................................................8
3. PIN FUNCTION ..................................................................................................................................... 9
3.1 Port Pins ...................................................................................................................................... 9
3.2 Non-port Pins ............................................................................................................................ 10
3.3 Pin Input/Output Circuits ......................................................................................................... 11
3.4 Recommended Connection of Unused Pins .......................................................................... 12
4. SWITCHING FUNCTION BETWEEN MK I MODE AND MK II MODE ............................................... 13
4.1 Difference between Mk I and Mk II Modes .............................................................................. 13
4.2 Setting Method of Stack Bank Select Register (SBS) ........................................................... 14
5. MEMORY CONFIGURATION ............................................................................................................. 15
6. EEPROM ............................................................................................................................................. 18
7. PERIPHERAL HARDWARE FUNCTIONS ......................................................................................... 19
7.1 Digital Input/Output Ports ........................................................................................................ 19
7.2 Clock Generator ........................................................................................................................ 19
7.3 Basic Interval Timer/Watchdog Timer ..................................................................................... 22
7.4 Timer Counter ........................................................................................................................... 23
7.5 Programmable Threshold Port (Analog Input Port) ............................................................... 27
7.6 Bit Sequential Buffer ....... 16 Bits ............................................................................................ 28
8. INTERRUPT FUNCTION AND TEST FUNCTION .............................................................................. 29
9. STANDBY FUNCTION ........................................................................................................................ 31
10. RESET FUNCTION ............................................................................................................................. 32
10.1 Configuration and Operation Status of RESET Function ..................................................... 32
10.2 Watchdog Flag (WDF), Key Return Flag (KRF) ...................................................................... 36
11. MASK OPTION ................................................................................................................................... 38
12. INSTRUCTION SETS .......................................................................................................................... 39
13. ELECTRICAL SPECIFICATIONS ...................................................................................................... 48
13.1
µ
PD754144 ................................................................................................................................. 48
13.2
µ
PD754244 ................................................................................................................................. 56
14. CHARACTERISTICS CURVES (REFERENCE VALUES) ................................................................. 67
14.1
µ
PD754144 ................................................................................................................................. 67
14.2
µ
PD754244 ................................................................................................................................. 69
4
Data Sheet U10040EJ2V1DS
µ
PD754144, 754244
15. RC OSCILLATION FREQUENCY CHARACTERISTICS EXAMPLES (REFERENCE VALUES) ..... 72
16. PACKAGE DRAWINGS ...................................................................................................................... 76
17. RECOMMENDED SOLDERING CONDITIONS .................................................................................. 78
APPENDIX A. COMPARISON OF FUNCTIONS AMONG
µ
PD754144, 754244, AND 75F4264 ........... 81
APPENDIX B. DEVELOPMENT TOOLS ................................................................................................. 82
APPENDIX C. RELATED DOCUMENTS ................................................................................................ 85
Data Sheet U10040EJ2V1DS
5