upd78f0148m1gka1-9eu Renesas Electronics Corporation., upd78f0148m1gka1-9eu Datasheet - Page 639

• Manufacturer Part Number: upd78f0148m1gka1-9eu
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

This appendix lists cautions described in this document.
“Classification (hard/soft)” in table is as follows.
Hard:
Soft:
Operating
frequency
rating
Pin
connection
Pin
functions
Memory
space
Port
functions
Function
Cautions for microcontroller internal/external hardware
Cautions for software such as register settings or programs
Peripheral
function: Count
clock, base
clock
Flash memory
Ports 4, 5, 6
P66
REGC pin
IMS: Internal
memory size
switching
register,
IXS: Internal
expansion RAM
size switching
register
SFR area:
Special function
register
SP: Stack
pointer
P02, P03, P04
P10, P11, P12
P66
P60 to P63
Details of
Function
−
−
The specifications of the peripheral functions (timer, serial interface, A/D
converter, etc.) are conventional when operating at V
Therefore, to select the count clock or base clock of a peripheral function,
satisfy the following conditions.
• V
• V
• V
• V
Rewrite the flash memory in the ranges of f
5.5 V as ever.
Connect the IC (Internally Connected) pin directly to V
Connect the AV
Connect the REGC pin as follows.
Connect the V
The external bus interface function cannot be used in (A1) grade products and
(A2) grade products.
P66 functions as an I/O port if the external wait is not used in external memory
expansion mode.
A regulator cannot be used with (A1) grade products and (A2) grade products.
Be sure to connect the REGC pin of these products directly to V
Regardless of the internal memory capacity, the initial values of the internal
memory size switching register (IMS) and internal expansion RAM size
switching register (IXS) of all 78K0/KF1 products are fixed (IMS = CFH, IXS =
0CH). Therefore, set the value corresponding to each product as indicated
below.
Do not access addresses to which SFRs are not assigned.
Since RESET input makes the SP contents undefined, be sure to initialize the
SP before using the stack.
When P02/SO11, P03/SI11, and P04/SCK11 are used as general-purpose
ports, do not write to serial clock selection register 11 (CSIC11).
When P10/SCK10/TxD0, P11/SI10/RxD0, and P12/SO10 are used as general-
purpose ports, do not write to serial clock selection register 10 (CSIC10).
P66 can be used as an I/O port when an external wait is not used in external
memory expansion mode.
Use of a pull-up resistor can be specified for P60 to P63 pins by a mask option
only in the mask ROM versions.
In the case of a 1-bit memory manipulation instruction, although a single bit is
manipulated, the port is accessed as an 8-bit unit. Therefore, on a port with a
mixture of input and output pins, the output latch contents for pins specified as
input are undefined, even for bits other than the manipulated bit.
APPENDIX D LIST OF CAUTIONS
DD
DD
DD
DD
= 4.0 to 5.5 V: Count clock or base clock ≤ 10 MHz
= 3.3 to 4.0 V: Count clock or base clock ≤ 8.38 MHz
= 2.7 to 3.3 V: Count clock or base clock ≤ 5 MHz
= 2.5 to 2.7 V: Count clock or base clock ≤ 2.5 MHz
User’s Manual U15947EJ3V1UD
PP
SS
pin to EV
pin to V
SS
SS
.
or V
SS
during normal operation.
Cautions
X
= 2 to 10 MHz and V
DD
SS
= 2.7 to 5.5 V.
.
DD
DD
.
= 2.7 to
p. 117
p. 18
p. 18
p. 24
p. 24
p. 24
p. 24
pp. 42,
43
p. 43
p. 45
p. 50
p. 57
p. 64
p. 88
p. 92
p. 102
p. 116
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