UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 38

• 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

2.2.3 P20 to P27 (port 2)
(1) Port mode
(2) Control mode
2.2.4 P30 to P33 (port 3)
timer I/O.
(1) Port mode
(2) Control mode
38
P20 to P27 function as an 8-bit I/O port. These pins also function as pins for A/D converter analog input.
The following operation modes can be specified in 1-bit units.
P30 to P33 function as a 4-bit I/O port. These pins also function as pins for external interrupt request input and
The following operation modes can be specified in 1-bit units.
Caution ANI0/P20 to ANI7/P27 are set in the analog input mode after release of reset.
P20 to P27 function as an 8-bit I/O port. P20 to P27 can be set to input or output port in 1-bit units using port
mode register 2 (PM2).
P20 to P27 function as A/D converter analog input pins (ANI0 to ANI7). When using these pins as analog input
pins, see (5) ANI0/P20 to ANI7/P27 in 13.6 Cautions for A/D Converter.
P30 to P33 function as a 4-bit I/O port. P30 to P33 can be set to input or output port in 1-bit units using port
mode register 3 (PM3). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 3
(PU3).
P30 to P33 function as external interrupt request input and timer I/O.
(a) INTP1 to INTP4
(b) TI51
(c) TO51
These are the external interrupt request input pins for which the valid edge (rising edge, falling edge, or both
rising and falling edges) can be specified.
This is an external count clock input pin to 8-bit timer/event counter 51.
This is a timer output pin from 8-bit timer/event counter 51.
Cautions 1. In the product with an on-chip debug function (
Note OCD1A is provided to the
2. For products without an on-chip debug function and with the flash memory of 48 KB or
P31/INTP2/OCD1A
more (
“K”, or “E”, and for the product with an on-chip debug function (
connect P31/INTP2/OCD1A
memory programmer.
• P31/INTP2/OCD1A
The above connection is not necessary when writing the flash memory by means of self
programming.
µ
PD78F0534, 78F0535, 78F0536, and 78F0537) and having a product rank of “I”,
µ
Note
PD78F0537D only.
CHAPTER 2 PIN FUNCTIONS
Note
User’s Manual U17260EJ6V0UD
pin down before a reset release, to prevent malfunction.
: Connect to EV
Note
as follows when writing the flash memory with a flash
SS
via a resistor (10 kΩ: recommended).
µ
PD78F0537D), be sure to pull the
µ
PD78F0537D),