MK7A20P

MK7A20P 8 bit microcontroller 1. Feature z ROM size: 2,048 Words OTP ROM z RAM size: 72 Bytes z 76 single word instruction z Stack level: 2 z I/O ports: 20 - Port B: 8 pull high I/O pin and has wake up function - Port A0~3: 4 normal I/O pin - Port C0~7: 8 normal I/O pin - RTCC: input pin z Four kinds of external oscillation modes can be selected: RC, LS(Low Speed) Crystal, NS(Normal Speed) Crystal and HS(High Speed) Crystal z Port B has signal toggle wake up function z Built-in one 8 bit count up Timer/counter (TMR0) with 8 bit programmable prescaler z Built-in Watchdog Timer z Operation Voltage: 2.2V 5.5V z Different Package Type: MK7A20PD28C: 28 pin DIP MK7A20PSD28C: 28 pin SDIP MK7A20PS28C: 28 pin SOP MK7A20PSS28C: 28 pin SSOP MK7A20PSD20C: 20 pin SDIP MK7A20PS20C: 20 pin SOP MK7A20PSD18C: 18 pin SDIP MK7A20PS18C: 18 pin SOP 1 2008/4/28 Rev.15 2. Pin Assignment MK7A20P 8 bit microcontroller RTCC 1 VDD 2 NC 3 VSS 4 NC 5 PA0 6 PA1 7 PA2 8 PA3 9 PB0 10 PB1 11 PB2 12 PB3 13 PB4 14 28 RESETB 27 OSC1 26 OSC2 25 PC7 24 PC6 23 PC5 22 PC4 21 PC3 20 PC2 19 PC1 18 PC0 17 PB7 16 PB6 15 PB5 28 pin SDIP,DIP or SOP package VSS 1 RTCC 2 VDD 3 VDD 4 PA0 5 PA1 6 PA2 7 PA3 8 PB0 9 PB1 10 PB2 11 PB3 12 PB4 13 VSS 14 28 RESETB 27 OSC1 26 OSC2 25 PC7 24 PC6 23 PC5 22 PC4 21 PC3 20 PC2 19 PC1 18 PC0 17 PB7 16 PB6 15 PB5 28 pin SSOP package PC4 1 PC5 2 PC6 3 PC7 4 OSC2 5 OSC1 6 RESETB 7 VDD 8 VSS 9 PA0 10 20 PC3 19 PB7 18 PB6 17 PB5 16 PB4 15 PB3 14 PB2 13 PB1 12 PB0 11 PA1 20 pin SDIP...