¡ Semiconductor
ML63512A/63514A
• Stack level
Call stack level
Register stack level
: 16 levels
: 16 levels
• I/O ports
Input ports: Selectable as input with pull-up resistor/high-impedance input
Output ports: N-channel open drain output (can directly drive LEDs)
Input-output ports: Selectable as input with pull-up resistor/high-impedance input
Selectable as N-channel open drain output/CMOS output
Canbeinterfacedwithexternalperipheralsthatuseadifferentpowersupplythanthisdevice
uses. (Power to the output port is supplied from V
Number of ports:
(separate power suply))
DDI
(For 48-pin packages)
Input port
Output port
Input-output port
(For 64-pin packages)
Input port
: 1 port ¥ 4 bits
: 1 port ¥ 4 bits
: 6 ports ¥ 4 bits
: 1 port ¥ 4 bits
: 1 port ¥ 4 bits
: 9 ports ¥ 4 bits
Output port
Input-output port
• Melody output function
Melody sound frequency
Tone length
: 529 to 2979 Hz (@ 32.768 kHz)
: 63 varieties
: 15 varieties
Tempo
Melody data
Number of ports
Buzzer driver signal output
: Stored in the program memory
: 1 (dedicated pin)
: 4 kHz (@ 32.768 kHz)
• Level detector
Conversion time
Dedicated input pins
: Approx. 183 ms (@ 32.768 kHz)
: 2 pins (switched by software; for the secondary
functions of the input ports)
: 12 levels
Detection level
• Comparator
Offset voltage
: 50 mV max. (V = 1.5 V)
DD
Comparison time
Number of channels
: Approx. 183 ms (@ 32.768 kHz)
: 1 (for the secondary functions of the input ports)
• Reset function
Reset through RESETB pin (RESETB pin can be pulled up by mask option)
• Power supply backup
Backup circuit (voltage multiplier) enables operation at 0.9 V minimum
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