UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 130

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

5.3 Registers Controlling Port Function
(1) Port mode registers (PM0 to PM7, PM12, and PM14)
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Port functions are controlled by the following four types of registers.
• Port mode registers (PM0 to PM7, PM12, PM14)
• Port registers (P0 to P7, P12 to P14)
• Pull-up resistor option registers (PU0, PU1, PU3 to PU5, PU7, PU12, PU14)
• A/D port configuration register (ADPC)
These registers specify input or output mode for the port in 1-bit units.
These registers can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets these registers to FFH.
When port pins are used as alternate-function pins, set the port mode register by referencing 5.5 Settings of
Port Mode Register and Output Latch When Using Alternate Function.
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17260EJ6V0UD