SAM7S161 Atmel Corporation, SAM7S161 Datasheet - Page 181

• Manufacturer Part Number: SAM7S161
• Manufacturer: Atmel Corporation

Specifications of SAM7S161

• Flash (kbytes): 16 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

7.6
ARM DDI 0029G
Data bus control
Figure 7-5 shows the ARM7TDMI data bus control timing. The timing parameters used
in Figure 7-5 are listed in Table 7-5.
The cycle shown in Figure 7-5 is a data write cycle because nENOUT was driven LOW
during phase one. Here, DBE has first been used to modify the behavior of the data bus,
and then nENIN.
nENOUT
D[31:0]
nENIN
MCLK
DBE
Note
Copyright © 1994-2001. All rights reserved.
Symbol
T
T
T
T
T
T
dbe
dbnen
dbz
doh
dout
dout
T
T
dbnen
dbz
Parameter
Data bus enable time from DBEr
DBE to nENOUT valid
Data bus disable time from DBEf
DOUT[31:0] hold from MCLKf
MCLKf to D[31:0] valid
T
dbe
Table 7-5 Data bus control timing parameters
T
dbz
Figure 7-5 Data bus control timing
T
dbnen
T
dbe
AC and DC Parameters
Parameter type
Maximum
Maximum
Minimum
Maximum
Maximum
T
doh
7-9