S87C552-4A68

The S87C552-4A68 is a kind of single-chip 8-Bit microcontroller. The S87C552-4A68 contains a 8k*8 a volatile 256*8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and compare latches, a 15-source, two-priority-level, nested interrupt structure, an 8-input ADC, a dual DAC pulse width modulated interface, two serial interfaces (UART and I2C-bus), a "watchdog" timer and on-chip oscillator and timing circuits.

There are some features of S87C552-4A68 as follows: (1)80C51 central processing unit; (2)8k*8 EPROM expandable externally to 64k bytes; (3)an additional 16-bit timer/counter coupled to four capture registers and three compare registers; (4)two standard 16-bit timer/counters; (5)256*8 RAM, expandable externally to 64k bytes; (6)capable of producing eight synchronized, timed outputs; (7)a 10-bit ADC with eight multiplexed analog inputs; (8)two 8-bit resolution, pulse width modulation outputs; (9)five 8-bit I/O ports plus one 8-bit input port shared with analog inputs; (10)I2C-bus serial I/O port with byte oriented master and slave functions; (11)full-duplex UART compatible with the standard 80C51; (12)on-chip watchdog timer; (13)16MHz speed; (14)extended temperature range: 0 to +70; (15)OTP package available.

What comes next is about the maximum ratings of S87C552-4A68: (1)storage temperature range: -65 to +150; (2)voltage on EA/VPP to VSS: -0.5 to +13 V; (3)voltage on any other pin to VSS: -0.5 to +6.5 V; (4)input, output DC current on any single I/O pin: 5.0 mA; (5)power dissipation (based on package heat transfer limitations, not device power consumption): 1.0 W.