ADUC847 Analog Devices, ADUC847 Datasheet - Page 100

• Manufacturer Part Number: ADUC847
• Description: Precision Analog Microcontroller: 12MIPS 8052 Flash MCU + 10-Ch 24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC847

• Mcu Core: 8052
• Mcu Speed (mips): 12
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 10
• Other: PWM

ADuC845/ADuC847/ADuC848
Table 69. SPI MASTER MODE TIMING (CPHA = 0) Parameter
t
t
t
t
t
t
t
t
t
t
1
SL
SH
DAV
DOSU
DSU
DHD
DF
DR
SR
SF
Characterized under the following conditions:
a. Core clock divider bits CD2, CD1, and CD0 in PLLCON SFR set to 0, 1, and 1, respectively, that is, core clock frequency = 1.57 MHz.
b. SPI bit-rate selection bits SPR1 and SPR0 in SPICON SFR set to 0 and 0, respectively.
(CPOL = 0)
(CPOL = 1)
SCLOCK Low Pulse Width
SCLOCK High Pulse Width
Data Output Valid After SCLOCK Edge
Data Output Setup Before SCLOCK Edge
Data Input Setup Time Before SCLOCK Edge
Data Input Hold Time After SCLOCK Edge
Data Output Fall Time
Data Output Rise Time
SCLOCK Rise Time
SCLOCK Fall Time
SCLOCK
SCLOCK
MOSI
MISO
t
DOSU
t
DSU
MSB IN
1
1
MSB
t
DHD
t
SH
t
DF
Figure 77. SPI Master Mode Timing (CHPA = 0)
t
DAV
t
SL
Rev. B | Page 100 of 108
t
DR
BITS 6–1
BITS 6–1
LSB IN
t
SR
LSB
Min
100
100
t
SF
Typ
635
635
10
10
10
10
Max
50
150
25
25
25
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns