S3C9404 - Samsung semiconductor

S3C9404 SAM87Ri family of 8-bit single-chip CMOS microcontrollers

Table 1-1. S3C9404/C9414 Pin Descriptions Pin Names P0.0-P0.7 Pin Type I/O Pin Description Bit-programmable I/O port for normal input or push-pull, open-drain output. Pull-up resistors are assignable by software. Bit-programmable I/O port for Schmitt trigger input or push-pull output. Pull-up resistors are assignable by software. Port 1 pins can also be use.

Features

CPU
• Timer/Counter
•
• SAM87Ri CPU core One 8-bit basic timer for watchdog function One 8-bit timer/counter with three operating modes (10-bit PWM 1ch) One 8-bit timer/counter for the zero-crossing detection circuit Memory
•
• 4-Kbyte internal program memory (ROM) 208-byte general purpose register area (RAM)
• Instruction Set
•
• Zero-Crossing Detection Circuit
• 41 instructions IDLE and STOP instructions added for power-down modes. Zero-crossing detection circuit that generates a digital signal in synchronism with an AC signal input Instruction Execution Time
• Buzzer Frequency R.