UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 138

• 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

138
Notes 1.
2.
The function of the ANI0/P20 to ANI7/P27 pins can be selected by using the A/D port configuration
register (ADPC), the analog input channel specification register (ADS), and PM2.
When using the P121 to P124 pins to connect a resonator for the main system clock (X1, X2) or
subsystem clock (XT1, XT2), or to input an external clock for the main system clock (EXCLK) or
subsystem clock (EXCLKS), the X1 oscillation mode, XT1 oscillation mode, or external clock input
mode must be set by using the clock operation mode select register (OSCCTL) (for details, see 6.3 (1)
Clock operation mode select register (OSCCTL) and (3) Setting of operation mode for
subsystem clock pin). The reset value of OSCCTL is 00H (all of the P121 to P124 are I/O port pins).
At this time, setting of PM121 to PM124 and P121 to P124 is not necessary.
Analog input selection
Digital I/O selection
ADPC
Table 5-6. Setting Functions of ANI0/P20 to ANI7/P27 Pins
Input mode
Output mode
Input mode
Output mode
CHAPTER 5 PORT FUNCTIONS
User’s Manual U17260EJ6V0UD
PM2
Selects ANI.
Does not select ANI.
Selects ANI.
Does not select ANI.
ADS
−
−
Analog input (to be converted)
Analog input (not to be converted)
Setting prohibited
Digital input
Digital output
ANI0/P20 to ANI7/P27 Pins