MC908QY8CDWE Freescale Semiconductor, MC908QY8CDWE Datasheet - Page 135

IC MCU 8BIT 8K FLASH 16-SOIC

MC908QY8CDWE

Manufacturer Part Number
MC908QY8CDWE
Description
IC MCU 8BIT 8K FLASH 16-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet

Specifications of MC908QY8CDWE

Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
16-SOIC (0.300", 7.5mm Width)
Processor Series
HC08QY
Core
HC08
Data Bus Width
8 bit
Data Ram Size
256 B
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
13
Number Of Timers
2
Operating Supply Voltage
3 V to 5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, M68CBL05AE, DEMO908QB8, DEMO908QC16
Minimum Operating Temperature
- 40 C
On-chip Adc
4-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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Manufacturer
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Price
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MC908QY8CDWE
Manufacturer:
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Part Number:
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Manufacturer:
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13.9 ESCI Arbiter
The ESCI module comprises an arbiter module designed to support software for communication tasks as
bus arbitration, baud rate recovery and break time detection. The arbiter module consists of an 9-bit
counter with 1-bit overflow and control logic. The can control operation mode via the ESCI arbiter control
register (SCIACTL).
13.9.1 ESCI Arbiter Control Register
AM1 and AM0 — Arbiter Mode Select Bits
ALOST — Arbitration Lost Flag
ACLK — Arbiter Counter Clock Select Bit
AFIN— Arbiter Bit Time Measurement Finish Flag
Freescale Semiconductor
These read/write bits select the mode of the arbiter module as shown in
This read-only bit indicates loss of arbitration. Clear ALOST by writing a 0 to AM1.
This read/write bit selects the arbiter counter clock source.
This read-only bit indicates bit time measurement has finished. Clear AFIN by writing any value to
SCIACTL.
1 = Arbiter counter is clocked with one half of the ESCI input clock generated by the ESCI prescaler
0 = Arbiter counter is clocked with the bus clock divided by four
1 = Bit time measurement has finished
0 = Bit time measurement not yet finished
Reset:
Read:
Write:
For ACLK = 1, the arbiter input clock is driven from the ESCI prescaler. The
prescaler can be clocked by either the bus clock or BUSCLKX4 depending
on the state of the ESCIBDSRC bit in configuration register.
Bit 7
AM1
Figure 13-18. ESCI Arbiter Control Register (SCIACTL)
0
AM[1:0]
Table 13-11. ESCI Arbiter Selectable Modes
= Unimplemented
0 0
0 1
1 0
1 1
ALOST
6
0
MC68HC908QB8 Data Sheet, Rev. 3
AM0
5
0
Idle / counter reset
Bit time measurement
Bus arbitration
Reserved / do not use
ACLK
NOTE
0
4
ESCI Arbiter Mode
AFIN
3
0
ARUN
2
0
AROVFL
Table
1
0
13-11.
ARD8
Bit 0
0
ESCI Arbiter
135

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