UPD78F9202MA-CAC-A Renesas Electronics America, UPD78F9202MA-CAC-A Datasheet - Page 205
UPD78F9202MA-CAC-A
Manufacturer Part Number
UPD78F9202MA-CAC-A
Description
MCU 8BIT 4KB FLASH 128B RAM
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9500MA-CAC-A.pdf
(342 pages)
Specifications of UPD78F9202MA-CAC-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
7
Program Memory Size
4KB (4K 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
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UPD78F9202MA-CAC-A
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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12.1 Register for Confirming Reset Source
store which source has generated the reset request.
Many internal reset generation sources exist in the 78K0S/KU1+. The reset control flag register (RESF) is used to
RESF can be read by an 8-bit memory manipulation instruction.
RESET input, reset signal generation by power-on-clear (POC) circuit, and reading RESF clear RESF to 00H.
The status of RESF when a reset request is generated is shown in Table 12-2.
Address: FF54H
Symbol
RESF
Flag
WDTRF
LVIRF
Note The value after reset varies depending on the reset source.
Caution Do not read data by a 1-bit memory manipulation instruction.
WDTRF
LVIRF
7
0
0
1
0
1
After reset: 00H
Reset Source
Table 12-2. RESF Status When Reset Request Is Generated
Figure 12-5. Format of Reset Control Flag Register (RESF)
Internal reset request is not generated, or RESF is cleared.
Internal reset request is generated.
Internal reset request is not generated, or RESF is cleared.
Internal reset request is generated.
6
0
Note
Cleared (0)
RESET Input
CHAPTER 12 RESET FUNCTION
R
User’s Manual U18172EJ3V0UD
5
0
Internal reset request by low-voltage detector (LVI)
Internal reset request by watchdog timer (WDT)
WDTRF
Cleared (0)
Reset by POC
4
3
0
Set (1)
Held
Reset by WDT
2
0
Held
Set (1)
Reset by LVI
1
0
LVIRF
0
203
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