AT83C5135 Atmel Corporation, AT83C5135 Datasheet - Page 39

• Manufacturer Part Number: AT83C5135
• Manufacturer: Atmel Corporation

Specifications of AT83C5135

• 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): 16
• Watchdog: Yes

Figure 13-1. PCA Timer/Counter
7683C–USB–11/07
F
F
Idle
CLK PERIPH
CLK PERIPH
T0 OVF
P1.2
/6
/2
Table 13-1.
Number
CIDL
Bit
7
6
5
4
3
2
1
0
7
CIDL
CF
Mnemonic
CMOD Register
CMOD - PCA Counter Mode Register (D9h)
WDTE
WDTE
CPS1
CPS0
CIDL
ECF
Bit
WDTE
6
-
-
-
CR
Description
Counter Idle Control
Cleared to program the PCA Counter to continue functioning during idle Mode.
Set to program PCA to be gated off during idle.
Watchdog Timer Enable
Cleared to disable Watchdog Timer function on PCA Module 4.
Set to enable Watchdog Timer function on PCA Module 4.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Count Pulse Select
CPS1CPS0
0
0
1
1
PCA Enable Counter Overflow Interrupt
Cleared to disable CF bit in CCON to inhibit an interrupt.
Set to enable CF bit in CCON to generate an interrupt.
5
-
CCF4 CCF3 CCF2 CCF1 CCF0
0
1
0
1
Selected PCA input
Internal clock f
Internal clock f
Timer 0 Overflow
External clock at ECI/P1.2 pin (max rate = f
CPS1 CPS0
4
-
CH
16 Bit Up Counter
CLK PERIPH
CLK PERIPH
3
ECF
-
CL
/6
/2
CMOD
0xD9
CCON
0xD8
AT83C5134/35/36
CPS1
overflow
2
To PCA
modules
CLK PERIPH
CPS0
1
It
/ 4)
ECF
0
39