SST89V516RD2-33-C-TQJE View Datasheet(PDF) - Microchip Technology
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Description
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SST89V516RD2-33-C-TQJE Datasheet PDF : 94 Pages
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FlashFlex MCU
SST89E516RD2 / SST89E516RD
SST89V516RD2 / SST89V516RD
Data Sheet
Table 1: Pin Descriptions (Continued) (3 of 3)
Symbol
Type1
Name and Functions
P4[3] /
INT2#
I/O
Bit 3 of port 4 / INT2# External interrupt 2 input
XTAL1
I
Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock
generator circuits.
XTAL2
O
Crystal 2: Output from the inverting oscillator amplifier
VDD
I
Power Supply
VSS
I
Ground
T0-0.0 25093
1. I = Input; O = Output
2. It is not necessary to receive a 12V programming supply voltage during flash programming.
3.ALE loading issue: When ALE pin experiences higher loading (>30pf) during the reset, the MCU may accidentally enter
into modes other than normal working mode. The solution is to add a pull-up resistor of 3-50 KΩ to VDD, e.g. for ALE
pin.
4. For 6 clock mode, ALE is emitted at 1/3 of crystal frequency.
5. Port 4 is not present on the PDIP and WQFN packages.
©2013 Silicon Storage Technology, Inc.
10
DS25093B
02/13
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