Cypress CY7C638xx ユーザーズマニュアル

Document 38-08035 Rev. *K

Page 82 of 83

*J

2147747

VGT/AESA

05/20/2008

TID number entered on page 1. Also changed the sentence “High current drive 

on GPIO pins” to “2mA source current on all GPIO pins”.

Point 26.0, 

 on page 68, changed the min. and max. voltages 

of Vcc3 (line 3) to 4.0 and 5.5 respectively.

Point 19.0, title modified to “Regulator Output”, instead of “USB Regulator 

Output”.

Added a point # 3 under Point 17.3.

Changed the storage temperature to “-40C to 90C” in Point # 25.0 (

 on page 68).

Added the die form after the end of page 4.

In line 3, under “Bit 2: P1.2/VREG” of 

 on page 34, the changes made 

were “CY7C63310/CY7C638xx” instead of “CY7C63813.

In line 1, under “Bit 6: USB CLK/2 Disable” of 

 on page 22, entered 

the word “clock” instead of “crystal oscillator”.

Entered the word “Reserved” and left its corresponding fields blank in the 

sub-table under “Bit[2:0]: VM[2:0]” of 

 on page 31.

Under “Bit [7:6]: Sleep Duty Cycle[1:0]”, made the following changes:

0 0 = 1/128 periods of the internal 32 kHz low speed oscillator.

0 1 = 1/512 periods of the internal 32 kHz low speed oscillator.

1 0 = 1/32 periods of the internal 32 kHz low speed oscillator.

1 1 = 1/8 periods of the internal 32 kHz low speed oscillator.

 on page 52, in line 4, deleted “57”, and made the word “AND” to 

lower case.

Added 32-Pin Sawn QFN Pin Diagram, package diagram, and ordering 

information.

Removed references to 3V for the 32 kHz oscillator in Section 10. Clocking. 

Added information on SROM Table read - section 9.6.

Updated section 12.3 Low-Power in Sleep Mode - Included Set P10CR[1] - 

during non-USB mode operations.

Added section 25 - Voltage Vs CPU Frequency char.

P1DATA register information updated. Vreg can operate independent of USB 

connection.

Included IMO and ILO characteristics in the AC char section.

Updated to data sheet template *E.

*K

2620679

CMCC/PYRS

12/12/08

Added Package Handling information

 (continued)

™ II Low Speed USB Peripheral Controller