XC68HC705B32CFN Freescale Semiconductor, XC68HC705B32CFN Datasheet - Page 74

• Manufacturer Part Number: XC68HC705B32CFN
• Description: IC MCU 2.1MHZ 32K OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 256 x 8
• Ram Size: 528 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6
Freescale
6-2
SCLK
TDO
pin
pin
(See note)
Note:
$0011
Clock extraction
polarity control
phase and
data register
data shift
Transmit
Transmit
register
Transmitter
Figure 6-1 Serial communications interface block diagram
The serial communications data register (SCI SCDR) is controlled by the internal
R/W signal. It is the transmit data register when written to and the receive data
register when read.
clock
TE
Transmitter
TRDE
R8
control
Internal bus
7
SERIAL COMMUNICATIONS INTERFACE
7
SBK
TC
T8
6
6
&
RDRF
5
5
+
&
control
IDLE
Flag
M
4
4
+
7
SCI interrupt
WAKE
OR
&
3
3
CPOL
NF
2
2
Receiver
&
control
CPHA
SCSR
$0010
FE
1
1
Receiver
clock
LBCL
0
SCCR1
$000E
SCCR2
$000F
Wake up
TCIE
RWU
SBK
RIE
ILIE
TIE
TE
RE
(See note)
unit
$0011
7
6
5
4
3
2
1
0
data register
data shift
Receive
Receive
register
MC68HC05B6
Rev. 4.1
RDI
pin