UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 267
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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17.1 Functions of Option Byte
when starting after a reset, the option byte is automatically referenced, and settings for the specified functions are
performed. When using the product, be sure to set the following functions by using the option byte.
The address 0080H of the flash memory of the 78K0S/KA1+ is an option byte area. When power is supplied or
(1) Selection of system clock source
(2) Low-speed internal oscillation clock oscillation
(3) Control of RESET pin
(4) Oscillation stabilization time on power application or after reset release
0080H
0000H
High-speed internal oscillation clock
Crystal/ceramic oscillation clock
External clock input
Cannot be stopped.
Can be stopped by software.
Used as RESET pin
2
2
2
2
RESET pin is used as an input port pin (P34) (refer to 17.3 Caution When the RESET Pin Is Used as an
Input-Only Port Pin (P34)).
10
12
15
17
/f
/f
/f
/f
X
X
X
X
Flash memory
Figure 17-1. Positioning of Option Byte
CHAPTER 17 OPTION BYTE
User’s Manual U16898EJ6V0UD
Option byte
1
OSTS1
DEF
OSTS0
DEF
1
RMCE
OSCSEL1
OSCSEL0 LIOCP
265
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