MCHLC908QY2CPE Freescale Semiconductor, MCHLC908QY2CPE Datasheet - Page 96

• Manufacturer Part Number: MCHLC908QY2CPE
• Description: IC MCU 1.5K FLASH 8MHZ 16-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MCHLC908QY2CPE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 2MHz
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 1.5KB (1.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

Oscillator Module (OSC)
11.8.2 Oscillator Trim Register (OSCTRIM)
TRIM7–TRIM0 — Internal Oscillator Trim Factor Bits
96
These read/write bits change the size of the internal capacitor used by the internal oscillator. By
measuring the period of the internal clock and adjusting this factor accordingly, the frequency of the
internal clock can be fine tuned. Increasing (decreasing) this factor by one increases (decreases) the
period by approximately 0.2% of the untrimmed period (the period for TRIM = $80). The trimmed
frequency is guaranteed not to vary by more than ±5% over the full specified range of temperature and
voltage. The reset value is $80, which sets the frequency to 4.0 MHz (1.0 MHz bus speed) ±25%.
Address: $0038
Reset:
Read:
Write:
TRIM7
Bit 7
1
Figure 11-5. Oscillator Trim Register (OSCTRIM)
MC68HLC908QY/QT Family Data Sheet, Rev. 3
TRIM6
6
0
TRIM5
5
0
TRIM4
4
0
TRIM3
3
0
TRIM2
2
0
TRIM1
1
0
Freescale Semiconductor
TRIM0
Bit 0
0