MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 174

• Manufacturer Part Number: MC68HC711E20CFN2
• Description: IC MCU 20K 2MHZ OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E20CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 20KB (20K x 8)
• Program Memory Type: OTP
• Eeprom Size: 512 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Serial Peripheral Interface (SPI)
Technical Data
174
SPR[1:0]
0 0
0 1
1 0
1 1
E Clock By
Divide
16
32
2
4
E = 1 MHz (Baud)
CPOL — Clock Polarity Bit
CPHA — Clock Phase Bit
SPR[1:0] — SPI Clock Rate Select Bits
Frequency at
When the clock polarity bit is cleared and data is not being
transferred, the SCK pin of the master device has a steady state low
value. When CPOL is set, SCK idles high. Refer to
8.5 Clock Phase and Polarity
The clock phase bit, in conjunction with the CPOL bit, controls the
clock-data relationship between master and slave. The CPHA bit
selects one of two different clocking protocols. Refer to
and
These two bits select the SPI clock (SCK) rate when the device is
configured as master. When the device is configured as slave, these
bits have no effect. Refer to
62.5 kHz
31.3 kHz
500 kHz
250 kHz
8.5 Clock Phase and Polarity
Table 8-1. SPI Clock Rates
Serial Peripheral Interface (SPI)
E = 2 MHz (Baud)
Frequency at
62.5 kHz
1.0 MHz
500 kHz
125 kHz
Table
Controls.
E = 3 MHz (Baud)
8-1.
Frequency at
Controls.
187.5 kHz
93.8 kHz
1.5 MHz
750 kHz
M68HC11E Family — Rev. 3.2
Figure 8-2
E = 4 MHz (Baud)
Frequency at
Figure 8-2
250 kHz
125 kHz
2 MHz
1 MHz
MOTOROLA
and