General Description
The EM78P372K is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. The device has an on-chip 2K13-bit Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a protection bit to prevent intrusion of user’s OTP memory code. Three Code option bits are also available to meet user’s requirements.
With enhanced OTP-ROM features, the EM78P372K provides a convenient way of developing and verifying user’s programs. Moreover, this OTP device offers the advantages of easy and effective program updates, using development and programming tools. User can avail of the ELAN Writer to easily program his development code.


 
Features
CPU configuration
2Kx13 bits on-chip ROM
80x8 bits on-chip registers (SRAM)
8-level stacks for subroutine nesting
4 programmable Level Voltage Detector (LVD) : 4.5V, 4.0V, 3.3V, 2.2V
Three programmable Level Voltage Reset (LVR) : 4.0V, 3.5V, 2.7V 
Less than 1.5 mA at 5V/4MHz
Typically 15 uA, at 3V/32kHz
Typically 2 uA, during sleep mode 
I/O port configuration
Three bidirectional I/O ports: P5, P6, P7
18 I/O pins
Wake-up port : P5,P70,P71
8 programmable pull-down I/O pins
16 programmable pull-high I/O pins
8 programmable open-drain I/O pins
14 high driver I/O pins
14 high sink I/O pins
External interrupt : P60
Operating voltage range: 
2.1V~5.5V at 0°C~70°C (commercial)
2.3V~5.5V at -40°C~85°C (industrial) 
Operating frequency range (base on 2 clocks):
Crystal mode: DC ~ 16MHz, 3.0V; 
DC ~ 8MHz, 2.5V; DC ~ 4MHz, 2.1V
ERC mode:DC~2MHz,2.1V
IRC mode 
Oscillation mode: 4MHz, 16MHz, 8MHz, 1MHz 


Fast set-up time requires only 0.8ms (VDD: 5V Crystal: 4MHz, C1/C2: 30pF) in HXT2 mode and 10ms in IRC mode (VDD: 5V, IRC: 4MHz)
Peripheral configuration
8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt
8-bit multi-channel Analog-to-Digital Converter with 12-bit resolution in Vref mode
Two Pulse Width Modulation (PWM) with 8-bit resolution.
One pair of comparator or OP(offset voltage: smaller than 10mV)
Ten available interrupts
TCC overflow interrupt
Input-port status changed interrupt (wake up from sleep mode)
External interrupt
ADC completion interrupt
IR/PWM period match completion
Comparator status change interrupt
Low voltage detect (LVD) interrupt
PWM period match interrupt
PWM duty match interrupt
Special Features:
Programmable free running Watchdog Timer(4.5 ms : 18 ms)
Power saving Sleep mode
Selectable Oscillation mode
Power-on voltage detector available (1.9V ± 0.2V)
High EFT immunity (better performance at 4MHz or below)
Package Type:
10-pin MSOP 118mil : EM78P372KMS10J/S
14-pin DIP 300mil : EM78P372KD14J/S
14-pin SOP 150mil : EM78P372KSO14J/S
16-pin SOP 150mil : EM78P372KSO16AJ/S
18-pin DIP 300mil : EM78P372KD18J/S
18-pin SOP 300mil : EM78P372KSO18J/S
20-pin DIP 300mil : EM78P372KD20J/S
20 pin SOP 300mil : EM78P372KSO20J/S
20 pin SSOP 209mil : EM78P372KSS20J/S
16-pin QFN 3×3×0.8mm : EM78P372KQN16S
Note: These are Green products which do not contain hazardous substances.