UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 44

• 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

44
P60/SCL0
P61/SDA0
P62/EXSCL0
P63
P70/KR0 to P77/KR7
P120/INTP0/EXLVI
P121/X1/OCD0A
P122/X2/EXCLK
OCD0B
P123/XT1
P124/XT2/EXCLKS
P130
P140/PCL/INTP6
P141/BUZ/INTP7
AV
AV
FLMD0
RESET
Notes 1. Use recommended connection above in I/O port mode (see Figure 6-2 Format of Clock Operation
Remark For the product ranks, consult an NEC
REF
SS
Pin Name
Notes 1, 5
Note 1
2. For products without an on-chip debug function and with the flash memory of 48 KB or more
3. Make the same potential as the V
4. FLMD0 is a pin that is used to write data to the flash memory. To rewrite the data of the flash memory
5. OCD0A and OCD0B are provided to the
Mode Select Register (OSCCTL)) when these pins are not used.
(
the product with an on-chip debug function (
when writing the flash memory with a flash memory programmer.
• P121/X1/OCD0A
The above connection is not necessary when writing the flash memory by means of self programming.
on-board, connect this pin to EV
when executing on-chip debugging with a product with an on-chip debug function (
µ
Notes 1, 2, 5
PD78F0534, 78F0535, 78F0536, and 78F0537) and having a product rank of “I”, “K”, or “E”, and for
Note 1
13-AD
13-P
5-AH
37
3-C
5-AH
38
2
I/O Circuit Type
Note 5
−
: When using this pin as a port, connect it to V
Table 2-2. Pin I/O Circuit Types (2/2)
recommended) (in the input mode) or leave it open (in the output mode).
CHAPTER 2 PIN FUNCTIONS
User’s Manual U17260EJ6V0UD
DD
SS
I/O
Output
I/O
Input
Input
pin when port 2 is used as a digital port.
or V
I/O
−
Electronics sales representative
µ
SS
PD78F0537D only.
Input:
Output: Leave this pin open at low-level output after clearing
Input:
Output: Leave open.
Input:
Output: Leave open.
Leave open.
Input:
Output: Leave open.
Connect directly to EV
Connect directly to EV
Connect to EV
Connect directly to V
via a resistor (10 kΩ: recommended). The same applies
µ
PD78F0537D), connect P121/X1/OCD0A
Connect to EV
the output latch of the port to 0.
Independently connect to EV
Independently connect to V
Independently connect to EV
Recommended Connection of Unused Pins
SS
or V
DD
SS
DD
SS
Note 4
or via a resistor.
SS
or V
or V
.
.
.
SS
DD
.
Note 3
.
DD
SS
DD
DD
or V
via a resistor (10 kΩ:
or EV
or EV
µ
SS
PD78F0537D).
via a resistor.
SS
SS
via a resistor.
via a resistor.
Note 5
as follows