HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 8

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

HMS87C5216
5. PIN FUNCTION
V
V
RESET: Reset the MCU.
X
ternal main clock operating circuit.
X
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
DD
SS
IN
OUT
R10
R11
R12
R13
R14
R15
R16
R17
: Circuit ground.
: Input to the inverting oscillator amplifier and input to the in-
: Supply voltage.
: Output from the inverting oscillator amplifier.
INT1 (External Interrupt input 1)
INT2 (External Interrupt input 2)
T0 (Timer / Counter inpit 0)
T1 (Timer / Counter inpit 1)
AN0 (ADC input 0)
AN1 (ADC input 1)
AN2 (ADC input 2)
AN3 (ADC input 3)
Alternate function
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.
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.
Port pin
R24
R25
T2 (Timer / Counter inpit 2)
/EC (Event Counter input )
Alternate function
SEP. 2004 Ver 1.01