AT83C5136 Atmel Corporation, AT83C5136 Datasheet - Page 136

• Manufacturer Part Number: AT83C5136
• Manufacturer: Atmel Corporation

Specifications of AT83C5136

• Max. Operating Frequency: 32 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 512
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 4
• Mask Rom (kbytes): 32
• Watchdog: Yes

Figure 24-1. Power-down Exit Waveform
136
AT83C5134/35/36
XTAL
INT0
INT1
Active Phase
Exit from power-down by reset redefines all the SFRs, exit from power-down by external inter-
rupt does no affect the SFRs.
Exit from power-down by either reset or external interrupt does not affect the internal RAM
content.
Note:
This table shows the state of ports during idle and power-down modes.
Table 24-1.
Note:
Power-down
Power-down
Mode
Idle
Idle
If idle mode is activated with power-down mode (IDL and PD bits set), the exit sequence is
unchanged, when execution is vectored to interrupt, PD and IDL bits are cleared and idle mode is
not entered.
1. Port 0 can force a 0 level. A “one” will leave port floating.
State of Ports
Program
Memory
External
External
Internal
Internal
Power-down Phase
ALE
1
1
0
0
PSEN
1
1
0
0
Oscillator restart Phase
Floating
Floating
PORT0
Data
Data
Port
Port
(1)
(1)
Port Data
Port Data
Port Data
Port Data
PORT1
Active Phase
Port Data
Port Data
Port Data
Address
PORT2
Port Data
Port Data
Port Data
Port Data
PORT3
7683C–USB–11/07
Port Data
Port Data
Port Data
Port Data
PORTI2