Memory configuration ? Three interrupt sources
OTP ROM size: 1K * 16 bits. One internal interrupts: T0, TC0.
RAM size: 48 * 8 bits. One external interrupts: INT0.
Four levels stack buffer
? Two 8-bit Timer/Counter
? I/O pin configuration T0: Basic Timer with 0.5sec RTC.
Bi-directional: P0, P1, P2, P5. TC0: Auto-reload timer/Counter/Buzzer output
Input only: P1.1.
Programmable open-drain: P1.0. ? On chip watchdog timer and clock source is internal
Wakeup: P0, P1 level change trigger low clock RC type (16KHz @3V, 32KHz @5V).
Pull-up resisters: P0, P1, P2, P5.
External Interrupt trigger edge: ? Dual system clocks
P0.0 controlled by PEDGE register. External high clock: RC type up to 10 MHz
External high clock: Crystal type up to 16 MHz
? 3-Level LVD. Internal high clock: 16MHz RC type. Fcpu is limited to
Fosc/4~Fosc/16.
Reset system and power monitor. Internal low clock: RC type 16KHz(3V), 32KHz(5V)
? Powerful instructions ? Operating modes
One clocks per instruction cycle (1T) Normal mode: Both high and low clock active
Most of instructions are one cycle only. Slow mode: Low clock only
All ROM area JMP instruction. Sleep mode: Both high and low clock stop
All ROM area CALL address instruction. Green mode: Periodical wakeup by T0 Timer
All ROM area lookup table function (MOVC)
? Package (Chip form support)
PDIP 14 pins
SOP 14 pins
SSOP 16 pins
I/O 引腳配置 TC0:自動裝載定時/計數(shù)器/PWM0/Buzzer 輸出。
雙向輸入輸出:P0,P4,P5。 TC1:自動裝載定時/計數(shù)器/PWM1/Buzzer 輸出。
單向輸入:P0.4 和復(fù)位引腳共享。
具有喚醒功能的引腳:P0 的電平變換。 ? 內(nèi)置看門狗定時器和內(nèi)部低速 RC 時鐘源
上拉電阻:P0,P4,P5。 (16KHz @3V,32KHz @5V)
外部中斷觸發(fā)邊沿:
P0.0 由 PEDGE 寄存器控制。 ? 雙重系統(tǒng)時鐘
P0.1 只由下降沿觸發(fā)。 外部高速時鐘:RC,最大 10MHz。
外部高速時鐘:晶振,最大 16MHz。
? 3 層 LVD 內(nèi)部高速時鐘:RC,最大 16MHz。
復(fù)位系統(tǒng)和電源監(jiān)控器 內(nèi)部低速時鐘:RC 16KHz(3V),32KHz(5V)。.
? 5 個中斷源 ? 操作模式
3 個內(nèi)部中斷源:TC0,TC1,ADC。 普通模式:高低速時鐘同時運行。
2 個外部中斷源:INT0,INT1。 低速模式:僅低速時鐘運行。
睡眠模式:高低速時鐘都停止運行。
? 功能強大的指令集 綠色模式:由 TC0 定時器周期性的喚醒。