MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 225

• Manufacturer Part Number: MC68HC908SR12CFA
• Description: MICROCONTROLLER 48 PIN
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 31
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Q1145673

14.4.4 Current Flow Detection Amplifier
14.4.5 Current Flow Detect Output
14.5 Interrupts
14.6 Low-Power Modes
14.6.1 Wait Mode
14.6.2 Stop Mode
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
The current flow detection amplifier is used to detect charge and
discharge current flowing through an external sensing resistor, R
The current flow detection flag CDIF is set when the voltage at OPIN1
exceeds –9mV (typical) (0.9 ampere when R
CDIF can generate an interrupt request to the CPU when the analog
module interrupt enable bit AMIEN is set (see
The current detect flag, CDIF, can be configured for direct control to
other external circuitry. When the CDOEN bit in CONFIG2 is set, the
status of CDIF is reflected on the PTC0/PWM0/CD pin. (See
Configuration Register 2 (CONFIG2)
When the AMIEN bit is set, the analog module is capable of generating
CPU interrupt requests. The interrupt vector is defined in
Vector
The STOP and WAIT instructions put the MCU in low power-
consumption standby modes.
In wait mode the analog module if enabled, continues to operate and
may generate an interrupt to trigger the MCU out of wait mode.
In stop mode, the temperature sensor and the two-stage amplifier are
disabled, but the current flow detection amplifier (when enabled)
continues to operate if the oscillator is enabled in stop mode. When
AMIEN is set, CDIF can be used to wake-up the MCU from the stop
mode.
Addresses.
Analog Module
and
18.5 Port
SENSE
Figure
= 0.01Ω). When set,
14-1).
C.)
Table 2-1 .
Analog Module
5.5
Data Sheet
Interrupts
SENSE
225
.