PXAG49KBA Datasheet | NXP Semiconductors

DESCRIPTION The XA-G49 is a member of Philips’ 80C51 XA (e Xtended Architecture) family of high performance 16-bit single-chip microcontrollers. The XA-G49 contains 64k bytes of Flash program memory, and provides three general purpose timers/counters, a watchdog timer, dual UARTs, and four general purpose I/O ports with programmable output configurations. A default serial loader program in the Boot ROM allows In-System Programming (ISP) of the Flash memory without the need for a loader in the Flash code. User programs may erase and reprogram the Flash memory at will through the use of standard routines contained in the Boot ROM (In-Application Programming). - Single supply voltage In-System Programming (ISP) of the Flash - Boot ROM contains low level Flash programming routines for In-Application Programming and a default serial loader using the UART memory (VPP = VDD, or VPP = 12V if desired) - 2048 bytes of on-chip data RAM - Supports off-chip program and data addressing up to 1 megabyte (20 address lines) - Three standard counter/timers with enhanced features (same as XA-G3 T0, T1, and T2). All timers have a toggle output capability FEATURES - 4.5V to 5.5V operation. For low voltage operation, consult factory. - 64K bytes of on-chip Flash program memory with In-System Programming capability - Watchdog timer - Two enhanced UARTs with independent baud rates - Seven software interrupts - Four 8-bit I/O ports, with 4 programmable output configurations for each pin - Five Flash blocks = two 8k byte blocks and three 16k byte blocks - Nearly identical to XA-G3, except for double the program and RAM memories - 30 MHz operating frequency at 5V - Power saving operating modes: Idle and Power-Down. Wake-Up from power-down via an external interrupt is supported. - 44-pin PLCC and 44-pin LQFP packages BLOCK DIAGRAM XA CPU Core Program Memory Bus 64K Bytes FLASH Data Bus SFR bus UART 0 2048 Bytes Static RAM Port 0 Port 1 UART 1 Timer 0, 1 Timer 2 Port 2 Port 3...