HMS87C5216 Datasheet, PDF (8/76 Pages) List of Unclassifed Manufacturers – CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD

HMS87C5216
5. PIN FUNCTION
V_DD: Supply voltage.
V_SS: Circuit ground.
RESET: Reset the MCU.
X_IN: Input to the inverting oscillator amplifier and input to the in-
ternal main clock operating circuit.
X_OUT: Output from the inverting oscillator amplifier.
R00~R07: R0 is an 8-bit CMOS bidirectional I/O port. R0 pins 1
or 0 written to the Port Direction Register can be used as outputs
or inputs.
R10~R17: R1 is an 8-bit CMOS bidirectional I/O port. R1 pins 1
or 0 written to the Port Direction Register can be used as outputs
or inputs.
In addition, R1 serves the functions of the various following spe-
cial features.
Port pin
Alternate function
R10 INT1 (External Interrupt input 1)
R11 INT2 (External Interrupt input 2)
R12 T0 (Timer / Counter inpit 0)
R13 T1 (Timer / Counter inpit 1)
R14 AN0 (ADC input 0)
R15 AN1 (ADC input 1)
R16 AN2 (ADC input 2)
R17 AN3 (ADC input 3)
R20~R22, R30~R37 : R2 & R3 is a 8-bit CMOS bidirectional I/
O port. Each pins 1 or 0 written to the their Port Direction Regis-
ter can be used as outputs or inputs.
In addition, R2 serves the functions of the various following spe-
cial features.
Port pin
Alternate function
R24 T2 (Timer / Counter inpit 2)
R25 /EC (Event Counter input )
R40~R43 : R4 is 1-bit CMOS bidirectional I/O port. This pin 1
or 0 written to the its Port Direction Register can be used as out-
puts or inputs.
SEP. 2004 Ver 1.01