MC68HC705JP7CDW Freescale Semiconductor, MC68HC705JP7CDW Datasheet - Page 100

• Manufacturer Part Number: MC68HC705JP7CDW
• Description: IC MCU 8BIT 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705JP7CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 22
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Simple Synchronous Serial Interface
9.3.3 SIOP Data Register
The SIOP data register (SDR) is located at address $000C and serves as both the transmit and receive
data register. Writing to this register will initiate a message transmission if the node is in master mode.
The SIOP subsystem is not double buffered and any write to this register will destroy the previous
contents. The SDR can be read at any time. However, if a transfer is in progress the results may be
ambiguous. Writing to the SDR while a transfer is in progress can cause invalid data to be transmitted
and/or received.
reset.
100
Address:
Reset:
Read:
Write:
Figure 9-6
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
$000C
Bit 7
Bit 7
shows the position of each bit in the register. This register is not affected by
Figure 9-6. SIOP Data Register (SDR)
6
6
5
5
Unaffected by reset
4
4
3
3
2
2
1
1
Freescale Semiconductor
Bit 0
Bit 0