MC68HC705C9ACFN Freescale Semiconductor, MC68HC705C9ACFN Datasheet - Page 66

IC MCU 2.1MHZ 16K OTP 44-PLCC

MC68HC705C9ACFN

Manufacturer Part Number
MC68HC705C9ACFN
Description
IC MCU 2.1MHZ 16K OTP 44-PLCC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

Specifications of MC68HC705C9ACFN

Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SCI, SPI
Peripherals
POR, WDT
Number Of I /o
24
Program Memory Size
16KB (16K x 8)
Program Memory Type
OTP
Ram Size
352 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-

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Serial Communications Interface (SCI)
T8 — Bit 8 (Transmitted)
M — Character Length Bit
WAKE — Wakeup Method Bit
9.13.3 SCI Control Register 2
SCI control register 2 (SCCR2), shown in
TIE — Transmit Interrupt Enable Bit
TCIE — Transmission Complete Interrupt Enable Bit
66
When the SCI is transmitting 9-bit characters, T8 is the ninth bit of the transmitted character. T8 is
loaded into the transmit shift register at the same time that the SCDR is loaded into the transmit
register. Resets have no effect on the T8 bit.
This read/write bit determines whether SCI characters are 8 bits long or 9 bits long. The ninth bit can
be used as an extra stop bit, as a receiver wakeup signal, or as a mark or space parity bit. Resets have
no effect on the M bit.
This read/write bit determines which condition wakes up the SCI: a logic 1 (address mark) in the most
significant bit (MSB) position of a received character or an idle condition on the PD0/RDI pin. Resets
have no effect on the WAKE bit.
This read/write bit enables SCI interrupt requests when the TDRE flag becomes set. Resets clear the
TIE bit.
This read/write bit enables SCI interrupt requests when the TC flag becomes set. Resets clear the
TCIE bit.
1 = 9-bit SCI characters
0 = 8-bit SCI characters
1 = Address mark wakeup
0 = Idle line wakeup
1 = TDRE interrupt requests enabled
0 = TDRE interrupt requests disabled
1 = TC interrupt requests enabled
0 = TC interrupt requests disabled
Enables the SCI receiver and SCI receiver interrupts
Enables the SCI transmitter and SCI transmitter interrupts
Enables SCI receiver idle interrupts
Enables SCI transmission complete interrupts
Enables SCI wakeup
Transmits SCI break characters
Reset:
$000F
Read:
Write:
Bit 7
TIE
0
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
Figure 9-10. SCI Control Register 2 (SCCR2)
TCIE
6
0
RIE
Figure
5
0
9-10, has these functions:
ILIE
4
0
TE
3
0
RE
2
0
RWU
1
0
Freescale Semiconductor
Bit 0
SBK
0

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