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Part: EM78P156EL
Category:
Microcontrollers
-> 8 bit
Description: 8-Bit MCU For General Purpose Product
Company: ELAN Microelectronics
Datasheet: Download EM78P156EL datasheet File size : 315 kB
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Datasheet text preview:
EM78P156EL
OTP ROM
1. GENERAL DESCRIPTION
EM78P156EL is an 8-bit microprocessor designed and developed with low-power and high-speed CMOS technology. It is equipped with 1K*13-bits Electrical One Time Programmable Read Only Memory (OTP-ROM). It provides a PROTECTION bit to prevent user's code in the OTP memory from being intruded. 6 OPTION bits are also available to meet user's requirements. With its OTP-ROM feature, the EM78P156EL is able to offer a convenient way of developing and verifying user's programs. Moreover, user can take advantage of EMC Writer to easily program his development code.
This specification is subject to change without prior notice.
1
2002/04/19
EM78P156EL
OTP ROM
2. FEATURES
· Operating voltage range : 2.3V~5.5V · Operating temperature range: 0°C~70°C · Operating frequency rang (base on 2 clocks ): * Crystal mode: DC~20MHz at 5V, DC~8MHz at 3V, DC~4MHz at 2.3V. * ERC mode: DC~4MHz at 5V, DC~4MHz at 3V, DC~4MHz at 2.3V. · Low power consumption: * Less then 1.6 mA at 5V/4MHz * Typically 15 µA at 3V/32KHz * Typically 1 µA during sleep mode · 1K × 13 bits on chip ROM · One security register to prevent intrusion of OTP memory codes · One configuration register to accommodate user's requirements · 48× 8 bits on chip registers (SRAM, general purpose register) · 2 bi-directional I/O ports · 5 level stacks for subroutine nesting · 8-bit real time clock/counter (TCC) with selective signal sources, trigger edges, and overflow interrupt · Two clocks per instruction cycle · Power down (SLEEP) mode · Three available interruptions * TCC overflow interrupt * Input-port status changed interrupt (wake up from sleep mode) * External interrupt · Programmable free running watchdog timer · 8 programmable pull-high pins · 7 programmable pull-down pins · 8 programmable open-drain pins · 2 programmable R-option pins · Package types: * 18 pin DIP 300mil : EM78P156ELP
* 18 pin SOP(SOIC) 300mil : EM78P156ELM
This specification is subject to change without prior notice. 2 2002/04/19
EM78P156EL
OTP ROM
* 20 pin SSOP 209mil * 20 pin SSOP 209mil
: EM78P156ELAS : EM78P156ELKM
· 99.9% single instruction cycle commands · The transient point of system frequency between HXT and LXT is around 400KHz
This specification is subject to change without prior notice.
3
2002/04/19
EM78P156EL
OTP ROM
3. PIN ASSIGNMENTS
EM78P156ELP EM78P156ELM
P52 P53 TCC /RESET VSS P60//INT P61 P62 P63 1 2 3 4 5 6 7 8 9 DIP SOP SOIC 18 17 16 15 14 13 12 11 10 P51 P50 OSCI OSCO VDD P67 P66 P65 P64 NC P52 P53 TCC /RESET VSS P60//INT P61 P62 P63
EM78P156ELAS
1 2 3 4 5 6 7 8 9 10 SSOP 20 19 18 17 16 15 14 13 12 11 NC P 51 P50 OSCI OSCO VDD P67 P 66 P65 P64 P52 P53 TCC /RESET VSS VSS P60//INT P61 P62 P63
EM78P156ELKM
1 2 3 4 5 6 7 8 9 10 SSOP 20 19 18 17 16 15 14 13 12 11 P 51 P50 OSCI OSCO VDD VDD P67 P66 P65 P64
Fig. 1 Pin Assignment Table 1 EM78P156ELP and EM78P156ELM Pin Description Symbol Pin No. VDD 14 OSCI OSCO TCC /RESET P50~P53 P60~P67 /INT VSS 16 15 3 4 17, 18, 1, 2 6~13 6 5 Type I I/O I I I/O I/O I Function * Power supply. * XTAL type: Crystal input terminal or external clock input pin. * ERC type: RC oscillator input pin. * XTAL type: Output terminal for crystal oscillator or external clock input pin. * RC type: Instruction clock output. * External clock signal input. * The real time clock/counter (with Schmitt trigger input pin), must be tied to VDD or VSS if not in use. * Input pin with Schmitt trigger. If this pin remains at logic low, the controller will also remain in reset condition. * P50~P53 are bi-directional I/O pins. * P50 and P51 can also be defined as the R-option pins. * P50~P52 can be pulled-down by software. * P60~P67 are bi-directional I/O pins. * These can be pulled-high or can be open-drain by software programming. * P60~P63 can also be pulled-down by software. * External interrupt pin triggered by falling edge. * Ground.
This specification is subject to change without prior notice.
4
2002/04/19
EM78P156EL
OTP ROM
Table 2 EM78P156ELAS Pin Description Symbol Pin No. VDD 15 OSCI OSCO TCC /RESET P50~P53 P60~P67 /INT VSS 17 16 4 5 18, 19, 2, 3 7~14 7 6 Type I I/O I I I/O I/O I Function * Power supply. * XTAL type: Crystal input terminal or external clock input pin. * ERC type: RC oscillator input pin. * XTAL type: Output terminal for crystal oscillator or external clock input pin. * RC type: Instruction clock output. * External clock signal input. * The real time clock/counter (with Schmitt trigger input pin), must be tied to VDD or VSS if not in use. * Input pin with Schmitt trigger. If this pin remains at logic low, the controller will also remain in reset condition. * P50~P53 are bi-directional I/O pins. * P50 and P51 can also be defined as the R-option pins. * P50~P52 can be pulled-down by software. * P60~P67 are bi-directional I/O pins. * These can be pulled-high or can be open-drain by software programming. * P60~P63 can also be pulled-down by software. * External interrupt pin triggered by falling edge. * Ground.
Table 3 EM78P156ELKM Pin Description Symbol Pin No. VDD 15,16 OSCI OSCO TCC /RESET P50~P53 P60~P67 /INT VSS 18 17 3 4 19, 20, 1, 2 7~14 7 5, 6 Type I I/O I I I/O I/O I Function * Power supply. * XTAL type: Crystal input terminal or external clock input pin. * ERC type: RC oscillator input pin. * XTAL type: Output terminal for crystal oscillator or external clock input pin. * RC type: Instruction clock output. * External clock signal input. * The real time clock/counter (with Schmitt trigger input pin), must be tied to VDD or VSS if not in use. * Input pin with Schmitt trigger. If this pin remains at logic low, the controller will also remain in reset condition. * P50~P53 are bi-directional I/O pins. * P50 and P51 can also be defined as the R-option pins. * P50~P52 can be pulled-down by software. * P60~P67 are bi-directional I/O pins. * These can be pulled-high or can be open-drain by software programming. * P60~P63 can also be pulled-down by software. * External interrupt pin triggered by falling edge. * Ground.
This specification is subject to change without prior notice.
5
2002/04/19
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