MC908QY2AVDWER Freescale Semiconductor, MC908QY2AVDWER Datasheet - Page 90
MC908QY2AVDWER
Manufacturer Part Number
MC908QY2AVDWER
Description
IC MCU 8BIT 1.5K FLASH 16SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908QY4MDWER.pdf
(184 pages)
Specifications of MC908QY2AVDWER
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
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)
2.7 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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Oscillator Module (OSC)
11.3.1 Internal Oscillator
The internal oscillator circuit is designed for use with no external components to provide a clock source
with tolerance less than ±25% untrimmed.An 8-bit trimming register allows adjustment to a tolerance of
less than ±5%.
The internal oscillator will generate a clock of 12.8 MHz typical (INTCLK) resulting in a bus speed (internal
clock ÷ 4) of 3.2 MHz. 3.2 MHz came from the maximum bus speed guaranteed at 3 V which is 4
MHz.Since the internal oscillator will have a ±25% tolerance (pre-trim), then the +25% case should not
allow a frequency higher than 4 MHz:
Figure 11-3
BUSCLKX4 by setting OSC2EN in PTAPUE register. See
90
3.2 MHz + 25% = 4 MHz
RST, IRQ: Pins have internal (about 30K Ohms) pull up
PTA[0:5]: High current sink and source capability
PTA[0:5]: Pins have programmable keyboard interrupt and pull up
PTB[0:7]: Not available on 8-pin devices – MC68HC908QT1, MC68HC908QT2, and MC68HC908QT4 (see note in
12.1
ADC: Not available on the MC68HC908QY1 and MC68HC908QT1
PTA4/OSC2/AD2/KBI4
PTA5/OSC1/AD3/KBI5
PTA0/AD0/TCH0/KBI0
PTA1/AD1/TCH1/KBI1
PTA2/IRQ/KBI2/TCLK
Introduction)
PTA3/RST/KBI3
shows how BUSCLKX4 is derived from INTCLK and, like the RC oscillator, OSC2 can output
POWER SUPPLY
PTB0
PTB1
PTB2
PTB3
PTB4
PTB5
PTB6
PTB7
Figure 11-1. Block Diagram Highlighting OSC Block and Pins
128 BYTES RAM
8-BIT ADC
V
V
DD
SS
MC68HC908QY/QT Family Data Sheet, Rev. 6
MC68HC908QT2, AND MC68HC908QT1:
MC68HC908QY4 AND MC68HC908QT4
MC68HC908QY2, MC68HC908QY1,
M68HC08 CPU
USER FLASH
4096 BYTES
1536 BYTES
Chapter 12 Input/Output Ports (PORTS)
KEYBOARD INTERRUPT
SYSTEM INTEGRATION
SINGLE INTERRUPT
POWER-ON RESET
MONITOR ROM
(OSCILLATOR)
Freescale Semiconductor
GENERATOR
16-BIT TIMER
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
MODULE
CLOCK
BREAK
COP
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