TS87C58X2-MIE Atmel, TS87C58X2-MIE Datasheet - Page 33
![IC MCU 8BIT 32K OTP 40MHZ 44VQFP](/photos/6/92/69202/313-44-vqfp_sml.jpg)
TS87C58X2-MIE
Manufacturer Part Number
TS87C58X2-MIE
Description
IC MCU 8BIT 32K OTP 40MHZ 44VQFP
Manufacturer
Atmel
Series
87Cr
Datasheet
1.TS87C54X2-LIC.pdf
(62 pages)
Specifications of TS87C58X2-MIE
Core Processor
8051
Core Size
8-Bit
Speed
40/20MHz
Connectivity
UART/USART
Peripherals
POR, WDT
Number Of I /o
32
Program Memory Size
32KB (32K 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
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
13. ONCE
4431E–8051–04/06
TM
Mode (ON Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using TS80C54/58X2 without
removing the circuit from the board. The ONCE mode is invoked by driving certain pins of the
TS80C54/58X2; the following sequence must be exercised:
While the TS80C54/58X2 is in ONCE mode, an emulator or test CPU can be used to drive the
circuit
Normal operation is restored when normal reset is applied.
Table 13-1.
Weak pull-up
• Pull ALE low while the device is in reset (RST high) and PSEN is high.
• Hold ALE low as RST is deactivated.
ALE
Table 13-1
External Pin Status during ONCE Mode
Weak pull-up
shows the status of the port pins during ONCE mode.
PSEN
Port 0
Float
Weak pull-up
Port 1
Weak pull-up
Port 2
AT/TS8xC54/8X2
Weak pull-up
Port 3
XTAL1/2
Active
33