MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 129

• Manufacturer Part Number: MC68HC908GR8CD
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908GR8CD

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 384 B
• Operating Supply Voltage: 3 V to 5 V
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Data Rom Size: 64 KB
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 21
• Program Memory Type: Flash

14.3.4 LVI Trip Selection
The LVI5OR3 bit in the configuration register selects whether the LVI is configured for 5V or 3V protection.
14.4 LVI Status Register
The LVI status register (LVISR) indicates if the V
LVIOUT — LVI Output Bit
14.5 LVI Interrupts
The LVI module does not generate interrupt requests.
14.6 Low-Power Modes
The STOP and WAIT instructions put the MCU in low power-consumption standby modes.
14.6.1 Wait Mode
If enabled, the LVI module remains active in wait mode. If enabled to generate resets, the LVI module can
generate a reset and bring the MCU out of wait mode.
14.6.2 Stop Mode
If enabled in stop mode (LVISTOP bit in the configuration register is set), the LVI module remains active
in stop mode. If enabled to generate resets, the LVI module can generate a reset and bring the MCU out
of stop mode.
Freescale Semiconductor
This read-only flag becomes set when the V
Table
14-1. Reset clears the LVIOUT bit.
Address:
The microcontroller is guaranteed to operate at a minimum supply voltage.
The trip point (V
Chapter 23 Electrical Specifications
Reset:
Read:
Write:
LVIOUT
$FE0C
Bit 7
0
V
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
TRIPF
= Unimplemented
Figure 14-3. LVI Status Register (LVISR)
TRIPF
V
V
DD
DD
6
0
0
< V
Table 14-1. LVIOUT Bit Indication
> V
V
< V
[5 V] or V
DD
DD
TRIPR
TRIPF
< V
TRIPR
5
0
0
TRIPF
DD
DD
NOTE
voltage falls below the V
for the actual trip point voltages.)
4
0
0
voltage was detected below the V
[3 V]) may be lower than this. (See
3
0
0
Previous value
LVIOUT
0
1
2
0
0
TRIPF
1
0
0
trip voltage. See
TRIPF
Bit 0
LVI Status Register
0
0
level.
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