M30840SGP#U5 Renesas Electronics America, M30840SGP#U5 Datasheet - Page 66

• Manufacturer Part Number: M30840SGP#U5
• Description: IC M32C/84 MCU ROMLESS 100LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M32C/80r

Specifications of M30840SGP#U5

• Core Processor: M32C/80
• Core Size: 16/32-Bit
• Speed: 32MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 45
• Program Memory Type: ROMless
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 10x10b, D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• For Use With: R0K330879S001BE - KIT DEV RSK M32C/87R0K330879S000BE - KIT DEV RSK M32C/87
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

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3
5. Reset
5.1 Hardware Reset 1
. v
J
2
Figure 5.1 Reset Circuit
0
C
1
Hardware reset 1, brown-out detection reset (hardware reset 2), software reset and watchdog timer reset
are available to reset the microcomputer.
Pins, the CPU and SFR are reset by setting the RESET pin. If the supply voltage meets the recommended
operating conditions, all pins are reset when a low-level ("L") signal is applied to the RESET pin (see Table
5.1). The oscillation circuit is also reset and the main clock starts oscillating. The CPU and SFR are reset
when the signal applied to the RESET pin changes "L" to high level ("H"). The microcomputer executes the
program in an address indicated by the reset vector. The internal RAM is not reset. When an "L" signal is
applied to the RESET pin while writing data to the internal RAM, the internal RAM is in an indeterminate
state.
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".
5.1.1 Reset on a Stable Supply Voltage
5.1.2 Power-on Reset
9
8 /
0 .
B
(1) Apply an "L" signal to the RESET pin
(2) Provide 20 or more clock cycle inputs into the X
(3) Apply an "H" signal to the RESET pin
(1) Apply an "L" signal to the RESET pin
(2) Raise the supply voltage to the recommended operating level
(3) Insert
(4) Provide 20 or more clock cycle inputs into the X
(5) Apply an "H" signal to the RESET pin
0
4
1
0
G
3
J
6
u
o r
0 -
. l
u
0
1
p
, 7
0
1
td(P-R)
(
NOTES:
RESET
2
M
0
3
____________
0
1. If V
2
5
____________
being turned on or off.
The supply voltage of M32C/84T must be V
C
8 /
ms as wait time for the internal voltage to stabilize
CC1
, 4
Page 43
>V
M
V
3
CC2
CC1
2
C
, the V
8 /
f o
____________
4
____________
____________
____________
4
____________
) T
9
5
CC2
V
RESET
0V
0V
voltage must be lower than that of V
CC1
Recommended
operating voltage
0.2V
or below
____________
CC1
IN
IN
CC1
pin
pin
=V
CC2
.
0.2V
td(P-R) + 20 or more clock cycle
inputs provided into the X
CC1
CC1
or below
when the power is
___________
IN
pin
5. Reset