UPD78F1000GB-GAF-AX Renesas Electronics America, UPD78F1000GB-GAF-AX Datasheet - Page 959

• Manufacturer Part Number: UPD78F1000GB-GAF-AX
• Description: MCU 16BIT 78K0R/KX3-L 44-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3-Lr

Specifications of UPD78F1000GB-GAF-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Kx3-L
• If supply voltage fluctuation is 50 ms or less in vicinity of LVI detection voltage
R01UH0106EJ0300 Rev.3.00
Oct 01, 2010
Remarks 1. If bit 2 (LVISEL) of the low voltage detection register (LVIM) is set to “1”, the meanings of the above
Note A flowchart is shown on the next page.
2. Remark m = 0, 1, n = 0 to 7
words change as follows.
• Supply voltage (V
• Detection voltage (V
78K0R/KC3-L, 78K0R/KD3-L, 78K0R/KE3-L: mn = 00 to 07
78K0R/KF3-L, 78K0R/KG3-L:
No
Figure 23-11. Example of Software Processing After Reset Release (1/2)
Restarting timer array unit
(TTmn = 1 → TSmn = 1)
Setting timer array unit
(to measure 50 ms)
50 ms has passed?
voltage or higher
processing <1>
processing <2>
(TMIFmn = 1?)
Clearing WDT
Initialization
Initialization
(LVIF = 0?)
Setting LVI
Detection
Reset
No
Yes
LVI reset
DD
)
LVI
) → Detection voltage (V
→ Input voltage from the external input pin (EXLVI)
Yes
;
; Setting of detection level by LVIS.
; f
; Initial setting for port.
; The timer counter is cleared and the timer is started.
Check the reset source, etc.
The low-voltage detector operates (LVION = 1).
CLK
Source: f
Timer starts (TSmn = 1).
Setting of division ratio of system clock,
such as setting of timer or A/D converter.
= Internal high-speed oscillation clock (8.16 MHz (MAX.)/2) (default)
where comparison value = 796: ≅ 50 ms
MCK
(8.16 MHz (MAX.)/2)/2
mn = 00 to 07, 10 to 13
EXLVI
CHAPTER 23 LOW-VOLTAGE DETECTOR
Note
= 1.21 V)
8
,
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