AT89S53-33AC ATMEL [ATMEL Corporation], AT89S53-33AC Datasheet - Page 14

• Manufacturer Part Number: AT89S53-33AC
• Description: 8-bit Microcontroller with 12K Bytes Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 5. Timer 2 in Clock-Out Mode
Figure 6. SPI Block Diagram
14
AT89S53
SPI STATUS REGISTER
OSCILLATOR
÷4÷16÷64÷128
SELECT
DIVIDER
SPI CONTROL
SPI INTERRUPT
SPI CLOCK (MASTER)
REQUEST
MSTR
SPE
8
INTERNAL
MSB
DATA BUS
8/16-BIT SHIFT REGISTER
8
READ DATA BUFFER
8
SPI CONTROL REGISTER
CLOCK
LOGIC
LSB
CLOCK
S
M
M
S
S
M
MISO
MOSI
P1.6
P1.5
SCK
P1.4
1.7
SS
0787E–MICRO–3/06