UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 655

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-GAH-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: 50
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

21.1 Regulator Overview
the regulator output voltage, connect the REGC pin to V
STOP mode that has been entered since operation of the internal high-speed oscillation clock and external main
system clock, 0.47
internal voltage.
21.2 Registers Controlling Regulator
(1) Regulator mode control register (RMC)
Address: F00F4H
The 78K0R/KE3 contains a circuit for operating the device with a constant voltage. At this time, in order to stabilize
The regulator output voltage is normally 2.5 V (typ.), and in the low consumption current mode, 1.8 V (typ.).
Symbol
RMC
Cautions 1. The RMC register can be rewritten only in the low consumption current mode (refer to
This register sets the output voltage of the regulator.
RMC is set with an 8-bit memory manipulation instruction.
Reset input sets this register to 00H.
Other than
RMC[7:0]
above
5AH
00H
2. When using the setting fixed to the low consumption current mode, the RMC register can
3. The self-programming function is disabled in the low consumption current mode.
7
After reset: 00H
μ
F is recommended. Also, use a capacitor with good characteristics, since it is used to stabilize
Table 21-1). In other words, rewrite this register during CPU operation with the subsystem
clock (f
clock (f
be used in the following cases.
<When the high-speed internal oscillation clock, external input clock, or subsystem clock
are selected for the CPU clock>
<When X1 clock is selected as the CPU clock>
Figure 21-1. Format of Regulator Mode Control Register (RMC)
Fixed to low consumption current mode (1.8 V)
Switches normal current mode (2.5 V) and low consumption current mode (1.8 V) according to the
condition (refer to Table 21-1)
Setting prohibited
IH
XT
) are both stopped.
) while the high-speed system clock (f
6
R/W
CHAPTER 21 REGULATOR
5
User’s Manual U17854EJ9V0UD
Control of output voltage of regulator
SS
4
via a capacitor (0.47 to 1
3
MX
) and high-speed internal oscillation
f
f
X
CLK
≤ 5 MHz and f
2
≤ 5 MHz
μ
F). However, when using the
1
CLK
≤ 5 MHz
0
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