MC68HC908MR8CP Freescale Semiconductor, MC68HC908MR8CP Datasheet - Page 213

• Manufacturer Part Number: MC68HC908MR8CP
• Description: IC MCU 8K FLASH 8MHZ PWM 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 12
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

11.9.1 TIMA Clock Pin (PTB2/TCLKA)
11.9.2 TIMA Channel I/O Pins (PTB3/TCH0A–PTB4/TCH1A)
11.10 I/O Registers
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
PTB2/TCLKA is an external clock input that can be the clock source for
the TIMA counter instead of the prescaled internal bus clock. Select the
PTB2/TCLKA input by writing logic 1s to the three prescaler select bits,
PS[2:0] (see
minimum TCLK pulse width, TCLKLMIN or TCLKHMIN, is:
The maximum TCLK frequency is the least: 4 MHz or bus frequency ÷ 2.
PTB2/TCLKA is available as a general-purpose I/O pin or ADC channel
when not used as the TIMA clock input. When the PTB2/TCLKA pin is
the TIMA clock input, it is an input regardless of the state of the DDRB2
bit in data direction register B.
Each channel I/O pin is programmable independently as an input
capture pin or an output compare pin. PTB3/TCH0A and PTB3/TCH1A
can be configured as buffered output compare or buffered PWM pins.
These I/O registers control and monitor TIMA operation:
•
•
•
•
•
TIMA status and control register (TASC)
TIMA control registers (TACNTH–TACNTL)
TIMA counter modulo registers (TAMODH–TAMODL)
TIMA channel status and control registers (TASC0 and TASC1)
TIMA channel registers (TACH0H–TACH0L and
TACH1H–TACH1L)
11.10.1 TIMA Status and Control
Timer Interface A (TIMA)
------------------------------------ -
bus frequency
1
+
t
su
Register). The
Timer Interface A (TIMA)
Technical Data
I/O Registers
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