PDF MG69L952 Data sheet ( Hoja de datos )

Número de pieza	MG69L952
Descripción	8-bit I/O type MCU
Fabricantes	Megawin
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No Preview Available ! (Preliminary) MG69L952 8-bit I/O type MCU with LED driver Features <<< • Single chip 8-bit micro-controller • Operating voltage: 1.8V to 3.6V • Memory: − Program ROM : 64K bytes − Data RAM : 256 bytes • 30 (6 + 24) high drive/sink I/O for LED display. • 8 general input/output pins (P0.0 to P0.7) • Two AUD output pins with 8-bit resolution for audio output • Built-in RTC (Real Time Clock). • Built-in low voltage reset (1.8V) • Built-in two programmable timers and one 16-bit capture timer − Timer0, Timer1, Timer 2 • Oscillator: − Main oscillator (Crystal, Ceramic and RC up to 4MHz @ 2.0V) operation at crystal or RC mode is selected by code option − Sub-oscillator (Crystal and Ceramic up to 100KHz @ 2.0V) operation at crystal mode only Application Field LED Calendar, LED Name Badge, Toy Controller This document contains information on a new product under development by MEGAWIN. MEGAWIN reserves the right to change or discontinue this product without notice. © MEGAWIN Technology Co., Ltd. 2010 All right reserved. 2010/11 version 0.04 MEGAWIN 1 page Program Counter (PC) The 16-bit program counter register provides the addresses, which step the micro-controller through sequential program instructions. Each time the micro-controller fetches an instruction from program memory, the lower byte of the program counter (PCL) is placed on the low-order 8 bits of the address bus, and the higher byte of the program counter (PCH) is placed on the high-order 8 bits. The counter is incremented each time when an instruction or data is fetched from program memory. Stack Pointer (S) The stack pointer is an 8-bit register, which is used to control the addressing of the variable-length stack. The stack pointer is automatically incremented and decremented under control of the micro-controller to perform stack manipulations by direction of either the program or interrupts (/IRQ). The stack allows simple implementation of nested subroutines and multiple level interrupts. The stack pointer is initialized by the user’s software. MEGAWIN MG69L952 Technical Summary 5 5 Page All system clocks stop oscillating. The uC can be awakened from stop mode by 4-ways: port 0 interrupt, hardware reset, low voltage reset, or power-on reset. This mode is inhibited when the code option NMO FX32 is enabled. Halt mode: (MCLKmgr.HALT = 1) The FCPU clock in off-line status. The oscillator(s) still oscillating if the MCLKmgr.CKC1, MCLKmgr.CKC0 keep low. The uC can be awakened from halt mode by 5-ways: all interrupt events (DIV, TM0, TM1, TM2, port 0, VDD1, RTC), hardware reset, low voltage reset, watchdog timer reset, or power-on reset. Before enter halt mode, the FCPU must set to slow mode firstly to make the current consumption less than 10uA. Note: Conditional Write Protect Register (CWPR) protects the contents of MCLKmgr register. When system change operation mode, the program must write 58H to CWPR and then set MCLKmgr at next write OP code. For example, the operation of entry stop mode as below: Example: SEI LDA #58h STA CWPR LDA #06H STA C0H CLI ;(F3h) ; Fcpu = Fm ; MCLKmgr MEGAWIN MG69L952 Technical Summary 11 11 Page

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