品牌:EMC 型号:EM78P468 批号:10+ 封装:DICE裸片 营销方式:现货 产品性质:* 处理信号:数字信号 制作工艺:半导体集成 导电类型:双*型 集成程度:中规模 工作温度:0~70（℃）
品牌| elan | 型号EM78P468 |
批号| 2010 | 封装DICE(裸片) |
营销方式| 现货 | 产品性质* |
处理信号| 数字信号 | 制作工艺半导体集成 |
导电类型| 双*型 | 集成程度中规模 |
General Description
This LSI is an 8-bit RISC t*e microprocessor with high speed CMOS technology and low power consumption. Integrated onto a single chip are on chip watchdog timer (WDT), Data RAM, ROM, programmable real time clock counter, internal/external interrupt, power down mode, LCD driver, infrared tran*itter function, and tri-state I/O. The EM78P468L provides multi-protection bits to protect against intrusion of user’s code in the OTP memory and a seven option bits to accommodate user’s requirements. It also provides an especial 13 bits customer ID option.
With its OTP-ROM feature, this LSI offers a convenient way of developing and verifying user’s programs. Moreover, user developed code can be easily programmed with the ELAN writer.
Features
CPU - Operating voltage and temperature range:
* EM78P468N:
* Commercial:2.3V ~ 5.5 V. (at 0℃~+70℃)
* Industrial: 2.5V ~ 5.5 V. (at -40℃~+85℃)
* EM78P468L:
* Commercial:2.1 V ~ 5.5 V. (at ℃~+70℃)
* Industrial: 2.3V ~ 5.5 V. (at -40℃~+85℃) - Operation speed: DC ~ 10MHz clock input
- Dual clock operation
* High frequency oscillator can select among Crystal, RC, or PLL (phase lock loop)
* Low frequency oscillator can select between Crystal or RC mode - Totally 272 bytes SRAM
* 144 bytes general purpose register
* 128 bytes on chip data RAM - 4K x 13 bits OTP - ROM (One Time Programmable - Read Only Memory)
- Up to 28 bi-directional tri-state I/O ports
* T*ically, 12 bi-directional tri-state I/O ports
* 16 bi-directional tri-state I/O ports shared with LCD segment output pin - 8-level stack for subroutine nesting
- 8-bit real time clock/counter (TCC)
- One infrared tran*itter/PWM generator function
- Four sets of 8 bits auto reload down-count timer can be used as interrupt sources
* Counter 1: independent down-count timer
* Counter 2, High Pulse Width Timer (HPWT), and Low Pulse Width Timer (LPWT) shared with IR function - Programmable free running on chip watchdog timer (WDT). This function can operate on Normal, Green and Idle mode
- Operation modes:
* Normal mode: The CPU operated on frequency of main oscillator (Fm)
* Green mode: The CPU operated on frequency sub-oscillator (Fs) and main oscillator (Fm) s*
* Idle mode: CPU idle, LCD display remains working
* Sleep mode: whole chip s* working - Input port wake up function (PORT6, PORT8). Working on Idle and Sleep mode
- Eight interrupt sources, three external and five internal
* Internal interrupt source : TCC; Counter 1,2; High/Low pulse width timer.
* External interrupt source : INT0, INT1 and Pin change wake-up (Port 6 and Port 8) - Packages:
* Dice form : 59 pin
* QFP-64 pin : EM78P468NQ (Body 14mm*20mm)
* QFP-64 pin : EM78P468LQ (Body 14mm*20mm)
* LQFP-64 pin : EM78P468NAQ (Body 7mm*7mm)
* LQFP-64 pin : EM78P468LAQ (Body 7mm*7mm)
* LQFP-44 pin : EM78P468*Q (Body 10mm*10mm)
* LQFP-44 pin : EM78P468LBQ (Body 10mm*10mm)
* QFP-44 pin : EM78P468NCQ (Body 10mm*10mm)
* QFP-44 pin : EM78P468LCQ (Body 10mm*10mm) - Power on voltage detector provided (2.0 &plu*n; 0.1V) for EM78P468N
- Power on voltage detector provided (1.7 &plu*n; 0.1V) for EM78P468L
LCD Circuit - Common driver pins: 4
- Segment driver pins: 32
- LCD Bias: 1/3, 1/2 bias
- LCD Duty: 1/4, 1/3, 1/2 duty
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