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EM78P447N manual
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Contents
Main
EM78P447N
8-Bit Microcontroller with OTP ROM
Product Specification
DOC. VERSION 1.1
ELAN MICROELECTRONICS CORP.
All Rights Reserved
Printed in Taiwan
ELAN MICROELECTRONICS CORPORATION
Contents
Page
EM78P447N
1 GENERAL DESCRIPTION
2 FEATURES
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EM78P447N
8-Bit Microcontroller with OTP ROM
Product Specification (V1.1) 03.30.2005 3
3 PIN ASSIGNMENT
Fig. 1 Pin Assignment
EM78P447N
8-Bit Microcontroller with OTP ROM
Table 1 EM78P447NAP and EM78P447NAM Pin Description
Table 2 EM78P447NAS Pin Description
8-Bit Microcontroller with OTP ROM
Table 3 EM78P447NBP and EM78P447NBWM Pin Description
Table 4 EM78P447NCK and EN78P447NCM Pin Description
8-Bit Microcontroller with OTP ROM
4 FUNCTION DESCRIPTION
EM78P447N
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
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8-Bit Microcontroller with OTP ROM
Product Specification (V1.1) 03.30.2005 9
Fig. 4 Data Memory Configuration
EM78P447N
4.1.4 R3 (Status Register)
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)
4.2 Special Purpose Registers
4.2.1 A (Accumulator)
4.2.2 CONT (Control Register)
EM78P447N
4.2.3 IOC5 ~ IOC7 (I/O Port Control Register)
4.2.4 IOCB (Wake-up Control Register for Port6)
EM78P447N
4.2.5 IOCE (WDT Control Register)
EM78P447N
4.2.6 IOCF (Interrupt Mask Register)
4.3 TCC/WDT & Prescaler
8-Bit Microcontroller with OTP ROM
Fig.7 (b) The I/O Port with R-Option (P70, P71) Circuit
IOD
4.4 I/O Ports
PCWR
PDWR
0 1
M U X
4.5 RESET and Wake-up
4.5.1 RESET
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8-Bit Microcontroller with OTP ROM
Table 7 The Summary of the Initialized Values for Registers
EM78P447N
8-Bit Microcontroller with OTP ROM
** To execute next instruction after the SLPC bit status of IOCE register being on
EM78P447N
4.5.2 The Status of RST, T, and P of STATUS Register
4.6 Interrupt
EM78P447N
4.7 Oscillator
4.7.1 Oscillator Modes
EM78P447N
4.7.2 Crystal Oscillator/Ceramic Resonators(XTAL)
EM78P447N
4.7.3 External RC Oscillator Mode
EM78P447N
4.8 CODE Option Register
4.8.1 Code Option Register (Word 0)
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EM78P447N
4.8.2 Customer ID Register (Word 1)
/RESET
EM78P447N
4.9 Power On Considerations
4.10 External Power On Reset Circuit
Vdd D
R Rin C
4.11 Residue-Voltage Protection
EM78P447N /RESET
40K R2
Vdd Q1
Vdd
4.12 Instruction Set
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Product Specification (V1.1) 03.30.2005 33
(This specification is subject to change without further notice)
4.13 Timing Diagram
RESET Timing (CLK="0")
TCC Input Timing (CLKS="0")
AC Test Input/Output Waveform
8-Bit Microcontroller with OTP ROM
5 ABSOLUTE MAXIMUM RATINGS
6 DC ELECTRICAL CHARACTERISTICS
6.1 DC Electrical Characteristic
(Ta= 25 C, VDD= 5.0V5%, VSS= 0V )
8-Bit Microcontroller with OTP ROM
6.2 AC Electrical Characteristic
(Ta=- -40C ~ 85 C, VDD=5V5%, VSS=0V)
* *
6.3 Device characteristic
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EM78P447N
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8-Bit Microcontroller with OTP ROM
APPENDIX A Package Types
B Package Information
20-Lead plastic dual inline package DIP 300 mil