UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 199
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UPD78F9221CS-CAC-A
Manufacturer Part Number
UPD78F9221CS-CAC-A
Description
MCU 8BIT 2KB FLASH 20PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9221MC-5A4-A.pdf
(418 pages)
Specifications of UPD78F9221CS-CAC-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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(7) Input switch control register (ISC)
(8) Port mode register 4 (PM4)
The input switch control register (ISC) is used to receive a status signal transmitted from the master during LIN
(Local Interconnect Network) reception.
By setting 1 to ISC0 and ISC1, the input source to INTP0 and TI000 switches to the input signal from the
P44/RxD6 pin.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
This register sets port 4 input/output in 1-bit units.
When using the P43/TxD6/INTP1 pin for serial interface data output, clear PM43 to 0 and set the output latch of
P43 to 1.
When using the P44/RxD6 pin for serial interface data input, set PM44 to 1. The output latch of P44 at this time
may be 0 or 1.
PM4 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to FFH.
Address: FF8CH
Address: FF24H
Symbol
PM4
Symbol
ISC
PM4n
7
1
0
1
ISC1
ISC0
7
0
0
1
0
1
After reset: 00H
After reset: FFH
Output mode (output buffer on)
Input mode (output buffer off)
Figure 11-11. Format of Input Switch Control Register (ISC)
TI000 (P30)
RxD6 (P44)
INTP0 (P30)
RxD6 (P44)
6
1
Figure 11-12. Format of Port Mode Register 4 (PM4)
6
0
CHAPTER 11 SERIAL INTERFACE UART6
PM45
R/W
5
R/W
P4n pin I/O mode selection (n = 0 to 5)
User’s Manual U16898EJ6V0UD
5
0
PM44
4
INTP0 input source selection
4
0
TI000 input source selection
PM43
3
PM42
3
0
2
PM41
2
0
1
PM40
ISC1
0
1
ISC0
0
197
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