VRS51C1000-40-QG Ramtron, VRS51C1000-40-QG Datasheet - Page 41

• Manufacturer Part Number: VRS51C1000-40-QG
• Description: Microcontrollers (MCU) 64K+1K 40MHz 5V
• Manufacturer: Ramtron

Specifications of VRS51C1000-40-QG

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 1 KB
• Interface Type: UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFP-44
• Minimum Operating Temperature: - 40 C
• Data Rom Size: 128 B
• Height: 2 mm
• Length: 10 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Width: 10 mm
• Lead Free Status / Rohs Status: Details

Data Memory Write Cycle Timing
The following timing diagram provides Data Memory Write Cycle timing information.
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F
IGURE
VRS51C1000
#PSEN
PORT2
PORT0
26: D
#WR
OSC
ALE
ATA
M
EMORY
T12
W
RITE
INST in
C
T1
YCLE
1
T
IMING
T2
Float
T3
A7-A0
2
2
T4
T5
T6
ADDRESS A15-A8
T7
5
3
T8
T9
Data out
T10
T11
T12
6
T1
T2
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4
T3
ADDRESS or
Float