M30878FJGP#U3 Renesas Electronics America, M30878FJGP#U3 Datasheet - Page 71
M30878FJGP#U3
Manufacturer Part Number
M30878FJGP#U3
Description
IC M32C/87 MCU FLASH 144LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M32C/80r
Datasheet
1.M3087BFLGPU3.pdf
(629 pages)
Specifications of M30878FJGP#U3
Core Processor
M32C/80
Core Size
16/32-Bit
Speed
32MHz
Connectivity
CAN, EBI/EMI, I²C, IEBus, IrDA, SIO, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
121
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
31K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 34x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
For Use With
R0K330879S001BE - KIT DEV RSK M32C/87
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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M32C/87 Group (M32C/87, M32C/87A, M32C/87B)
REJ09B0180-0151 Rev.1.51 Jul 31, 2008
Page 47 of 587
5.
Hardware reset 1, hardware reset 2 (Vdet3 detection function), software reset and watchdog timer reset are
implemented to reset the MCU.
5.1
Figure 5.1
5.1.1
5.1.2
Pins, CPU, and SFRs are reset by using the RESET pin. When a low-level (“L”) signal is applied to the RESET pin
while the supply voltage meets the recommended operating conditions, ports and I/O pins for peripheral functions
are reset. (Refer to Table 5.1 Pin states while RESET pin is held “L”.) Also, the oscillation circuit is reset and the
main clock starts oscillating. CPU and SFRs are reset when the signal applied to the RESET pin changes from “L”
to high-level (“H”) signal, and then the MCU executes a program beginning with the address indicated by the reset
vector. The WDC5 bit in the WDC register and the internal RAM are not reset by hardware reset 1. When an “L”
signal is applied to the RESET pin while writing data to the internal RAM, the value written to the internal RAM
becomes undefined.
Figure 5.1 shows an example of the reset circuit. Figure 5.2 shows a reset sequence. Table 5.1 lists pin states while
the RESET pin is held “L”.
Reset
Hardware Reset 1
(1) Apply an “L” signal to the RESET pin.
(2) Input 20 clock cycles or more into the XIN pin.
(3) Apply an “H” signal to the RESET pin.
(1) Apply an “L” signal to the RESET pin.
(2) Increase the supply voltage until it meets the recommended operating condition.
(3) Wait for td(P-R) (internal power supply stabilization time) or more to allow the internal power supply to
(4) Inputs 20 clock cycles or more into the XIN pin.
(5) Apply an “H” signal to the RESET pin.
NOTE:
1. If operating at VCC1 > VCC2, VCC2 voltage must be lower than VCC1 voltage when powering up and down.
Reset at a Stable Supply Voltage
Power-on Reset
stabilize.
Example of Reset Circuit
VCC1
RESET
RESET
VCC1
0V
0V
operating voltage
Recommended
0.2VCC1 or below
Input td(P-R) + 20 clock cycles or more
to the XIN pin
0.2VCC1 or below
5. Reset
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