AT89LP214 Atmel Corporation, AT89LP214 Datasheet - Page 54

• Manufacturer Part Number: AT89LP214
• Manufacturer: Atmel Corporation

Specifications of AT89LP214

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 12
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.4 to 5.0
• Timers: 2
• Isp: SPI/OCD
• Watchdog: Yes

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AT89LP213/214
Figure 18-2. SPI Shift Register Diagram
Figure 18-3. SPI Block Diagram
Transmit
Serial In
Byte
÷4÷8÷32÷64
SPI Status Register
Oscillator
Select
Divider
SPI Control
8
MUX
8
SPI Clock (Mater)
2:1
SPI Interrupt
Request
8
Parallel Master
Serial Master
(Write Buffer)
D
CLK
D
CLK
LATCH
LATCH
MSTR
SPE
8
MSB
Data Bus
Internal
Q
Q
8
Read Data Buffer
Write Data Buffer
7
8-bit Shift Register
8
SPI Control Register
Clock
Logic
MUX
LSB
Clock
2:1
8
Parallel Slave
Serial Slave
(Read Buffer)
D
CLK
D
CLK
LATCH
LATCH
S
M
M
S
S
M
Q
Q
3538E–MICRO–11/10
8
Serial Out
Receive
Byte
MISO
MOSI
P1.6
P1.5
SCK
P1.4
1.7
SS