TS87C54X2-VCB Atmel, TS87C54X2-VCB Datasheet - Page 55

• 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: -

19.5.11
Table 19-15. AC Parameters
19.5.12
4431E–8051–04/06
External Clock Drive Characteristics (XTAL1)
External Clock Drive Waveforms
0 . 4 5 V
V
C C
- 0 . 5 V
Figure 19-11. External Clock Drive Waveforms
T
CHCX
Symbol
T
T
T
T
T
CHCX
CLCH
CHCL
CLCL
CLCX
/T
CLCX
0 . 2 V
0 . 7 V
Oscillator Period
High Time
Low Time
Rise Time
Fall Time
Cyclic ratio in X2 mode
C C
T
C C
C H C L
- 0 . 1 V
Parameter
T
C L C X
T
C L C L
T
C L C H
T
C H C X
Min
25
40
5
5
AT/TS8xC54/8X2
Max
60
5
5
Units
ns
ns
ns
ns
ns
%
55