Product Specification
EM78P447N
8-Bit Microcontroller with OTP ROM
ELAN MICROELECTRONICS CORP
Trademark Acknowledgments
Copyright 2005 by ELAN Microelectronics Corporation
All Rights Reserved
ELAN MICROELECTRONICS CORPORATION
Contents
FEATURES
Specification Revision History
DC ELECTRICAL CHARACTERISTICS
DC Electrical Characteristic
AC Electrical Characteristic
EM78P447N
2 FEATURES
1 GENERAL DESCRIPTION
Programmable free running watchdog timer
EM78P447N
3 PIN ASSIGNMENT
This specification is subject to change without further notice
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Fig. 1 Pin Assignment
Table 2 EM78P447NAS Pin Description
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Table 1 EM78P447NAP and EM78P447NAM Pin Description
Table 4 EM78P447NCK and EN78P447NCM Pin Description
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Table 3 EM78P447NBP and EM78P447NBWM Pin Description
4 FUNCTION DESCRIPTION
Fig. 2 Functional Block Diagram
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Table 5 EM78P447NDK and EM78P447NDM Pin Description
4.1 Operational Registers
4.1.1 R0 Indirect Addressing Register
4.1.2 R1 Time Clock /Counter
4.1.3 R2 Program Counter & Stack
Reset Vector
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Fig. 3 Program Counter Organization
00 PAGE0 0000~03FF
Fig. 4 Data Memory Configuration
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4.1.5 R4 RAM Select Register
4.1.6 R5~R7 Port 5 ~ Port7
4.1.7 R8~R1F and R20~R3E General Purpose Register
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4.2 Special Purpose Registers
4.1.8 R3F Interrupt Status Register
4.2.1 A Accumulator
4.2.2 CONT Control Register
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4.2.3 IOC5 ~ IOC7 I/O Port Control Register
4.2.4 IOCB Wake-up Control Register for Port6
4.2.5 IOCE WDT Control Register
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4.2.6 IOCF Interrupt Mask Register
Fig. 5 Sleep Mode and Wake-Up Circuits on I/O Ports Block Diagram
EM78P447N
4.3 TCC/WDT & Prescaler
Fig. 6 TCC and WDT Block Diagram
4.4 I/O Ports
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Fig. 7 a The I/O Port and I/O Control Register Circuit
Fig.7 b The I/O Port with R-Option P70, P71 Circuit
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4.5 RESET and Wake-up
4.5.1 RESET
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Table 6 Usage of Sleep1 and Sleep2 Mode
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Table 7 The Summary of the Initialized Values for Registers
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0x09~0x3E
4.5.2 The Status of RST, T, and P of STATUS Register
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4.6 Interrupt
Fig. 8 Controller Reset Block Diagram
4.7 Oscillator
4.7.1 Oscillator Modes
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Fig. 9 Interrupt Input Circuit
4.7.2 Crystal Oscillator/Ceramic ResonatorsXTAL
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Fig. 10 Crystal/Resonator Circuit
Fig. 11 Crystal/Resonator Circuit
Fig. 12 External RC Oscillator Mode Circuit
4.7.3 External RC Oscillator Mode
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4.8 CODE Option Register
4.8.1 Code Option Register Word
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Bit 8 CLKS Instruction period option bit 0 two oscillator periods
4.9 Power On Considerations
4.10 External Power On Reset Circuit
RESET
4.8.2 Customer ID Register Word
4.11 Residue-Voltage Protection
Vdd EM78P447N RESET
Vdd EM78P447N RESET
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4.12 Instruction Set
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EM78P447N
INSTRUCTION
MNEMONIC
OPERATION
EM78P447N
This instruction is applicable to IOC5 ~ IOC7, IOCB, IOCE, IOCF only
This instruction is not recommended for R3F operation
This instruction cannot operate under R3F
4.13 Timing Diagram
This specification is subject to change without further notice
EM78P447N
TEST POINTS
DC ELECTRICAL CHARACTERISTICS
DC Electrical Characteristic
5 ABSOLUTE MAXIMUM RATINGS
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AC Electrical Characteristic
EM78P447N 8-Bit Microcontroller with OTP ROM
6.3 Device characteristic
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This specification is subject to change without further notice
EM78P447N
Fig.18 Port5, Port6
and Port7 Voh vs. Ioh,VDD=5V
This specification is subject to change without further notice
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Voh/Ioh VDD=3V
IohmA
This specification is subject to change without further notice
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Vol/Iol VDD=5V
IolmA
This specification is subject to change without further notice
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Vol/Iol VDD=3V
IolmA
This specification is subject to change without further notice
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Vol/Iol
IolmA
This specification is subject to change without further notice
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Vol/Iol
IolmA
WDT Timeout
This specification is subject to change without further notice
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period
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R=3.3k
R=5.1k
R=10k
ICC1:VDD=3V, Fosc=32 kHz, 2clock, WDT disable
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Fig. 28 Maximum Operating Current(ICC1 and ICC2) vs. Temperature
Fig. 29 Typical Operating Current(ICC3 and ICC4) vs. Temperature
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Max ICC2
Maximum ICC3 and ICC4 vs. Temperature
Temperature
Fig. 30 Maximum Operating Current(ICC3 and ICC4) vs. Temperature
Fig. 31 Typical Standby Current(ISB1 and ISB2) vs. Temperature
Fig. 32 Maximum Standby Current(ISB1 and ISB2) vs. Temperature
Fig. 33 Operating Voltage In Temperature Range from -40 to
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Max ISB2
This specification is subject to change without further notice
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Fig. 34 EM78P447N I-V Curve Operating at 4 MHz
Fig. 35 EM78P447N I-V Curve Operating at 32.768 kHz
APPENDIX A Package Types
B Package Information
EM78P447N
20-Lead plastic dual inline package(DIP)- 300 mil
This specification is subject to change without further notice
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24-Lead plastic dual inline skinny package(DIP)- 300 mil
28-Lead plastic dual inline package(DIP)- 600 mil
This specification is subject to change without further notice
EM78P447N
32-Lead plastic dual inline package(DIP)- 600 mil
20-Lead plastic small outline package(SOP)- 300 mil
This specification is subject to change without further notice
EM78P447N
24-Lead plastic small outline package(SOP)- 300 mil
28-Lead plastic small outline package(SOP)- 300 mil
This specification is subject to change without further notice
EM78P447N
32-Lead plastic small outline package(SOP)- 300 mil
28-Lead Shrink Small Outline Package(SSOP)- 209 mil