EM6635
Features
32’768Hz crystal oscillator 500k Hz RC Oscillator (no external ponent) External clock (metal option) 9 High drive outputs: up to 20m A Melody generator with 255 programmable frequencies True Low Power: 1.5u A active mode 0.4u A halt mode
@ 1.55V, 32k Hz, 25°C
Figure 1. Architecture
Crystal Oscillator 32k Hz RC Oscillator 500k Hz or External clock ROM 4096 x 16Bits RAM 256 x 4Bits Watch Dog timer
Timer 1
VLD 3levels
Timer 2
Frequency Doubler Power Supply Voltage reg. Reset Logic
Core EM6600
B CD Counter Frequency Generator Interrupt Controller
Low Supply Voltage 1.2V to 3.6V Max. 14 Inputs with selectable debouncers; Port P1, P2, P6, P70, P71 Max. 15 outputs (9 I/O High drive outputs); Port P3, P4, P6, P70, P71, P72 Mask ROM 4096 x 16bits RAM 256 x 4bits 2 clocks per instruction cycle 72 basic instructions 2 outputs; Reset OUT, Buzzer OUT 2 timers 8bits 2 x 4 bits BCD counters Event counter 3bits Prescaler down to 1Hz (crystal =32k Hz), readable by CPU in 2 ranges Serial Port...
