UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 401

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

Flash
memory
On-chip
debug
function
Electrical
specifica-
tions
(Standard
product, (A)
grade
product)
Function
Shifting to self
programming
mode
Shifting to
normal mode
Byte write
Connecting
QB-MINI2 to
78K0S/KA1+
Circuit
Connection for
the Case
Where QB-
MINI2 Is Used
for Debugging
and Debugging
of INTP3 Pin Is
Performed Only
with Real
Machine
Absolute
maximum
ratings
X1 oscillator
characteristics
A/D converter
Details of
Function
Be sure to perform the series of operations described above using the user
program at an address where data is not erased or written.
If a write results in failure, erase the block once and write to it again.
Do not use the on-chip debug function in products designated for mass
production, because the guaranteed number of rewritable times of the flash
memory may be exceeded when this function is used, and product reliability
therefore cannot be guaranteed. NEC Electronics is not liable for problems
occurring when the on-chip debug function is used.
The constants described in the circuit connection example are reference values.
If you perform flash programming aiming at mass production, thoroughly
evaluate whether the specifications of the target device are satisfied.
If debugging is performed with a real machine running, without using QB-MINI2,
write the user program using the QB-Programmer. Programs downloaded by
the debugger include the monitor program, and such a program malfunctions if
it is not controlled via QB-MINI2.
Product quality may suffer if the absolute maximum rating is exceeded even
momentarily for any parameter. That is, the absolute maximum ratings are rated
values at which the product is on the verge of suffering physical damage, and
therefore the product must be used under conditions that ensure that the
absolute maximum ratings are not exceeded.
When using the X1 oscillator, wire as follows in the area enclosed by the broken
lines in the above figures to avoid an adverse effect from wiring capacitance.
The conversion accuracy may be degraded when the analog input pin is used
as an alternate I/O port or if a port is changed during A/D conversion.
• Keep the wiring length as short as possible.
• Do not cross the wiring with the other signal lines.
• Do not fetch signals from the oscillator.
• Do not route the wiring near a signal line through which a high fluctuating
• Always make the ground point of the oscillator capacitor the same potential
• Do not ground the capacitor to a ground pattern through which a high current
current flows.
as V
flows.
SS
APPENDIX D LIST OF CAUTIONS
.
User’s Manual U16898EJ5V0UD
Cautions
288, 290,
291
pp. 287,
p. 299
p. 324
p. 324
p. 326
p. 338
p. 339
p. 346
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(18/19)
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