TS87C54X2-VCB Atmel, TS87C54X2-VCB Datasheet - Page 56

• Manufacturer Part Number: TS87C54X2-VCB
• Description: IC MCU 8BIT 16K OTP 40MHZ 44PLCC
• Manufacturer: Atmel
• Series: 87Cr

Specifications of TS87C54X2-VCB

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/30MHz
• Connectivity: UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

19.5.13
19.5.14
19.5.15
56
AT/TS8xC54/8X2
AC Testing Input/Output Waveforms
Float Waveforms
Clock Waveforms
I N P U T / O U T P U T
Figure 19-12. AC Testing Input/Output Waveforms
AC inputs during testing are driven at V
measurement are made at V
Figure 19-13. Float Waveforms
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage
occurs and begins to float when a 100 mV change from the loaded V
≥ ± 20mA.
Valid in normal clock mode. In X2 mode XTAL2 signal must be changed to XTAL2 divided by
two.
V
C C
0 . 4 5 V
- 0 . 5 V
V
V
O H
O L
- 0 . 1 V
+ 0 . 1 V
F L O A T
V
L O A D
IH
min for a logic “1” and V
0 . 2 V
0 . 2 V
C C
C C
CC
+ 0 . 9
- 0 . 1
- 0.5 for a logic “1” and 0.45V for a logic “0”. Timing
V
V
L O A D
L O A D
+ 0 . 1 V
- 0 . 1 V
IL
max for a logic “0”.
OH
/V
OL
level occurs. I
4431E–8051–04/06
OL
/I
OH