XC68HC705B32CB Freescale Semiconductor, XC68HC705B32CB Datasheet - Page 225

• Manufacturer Part Number: XC68HC705B32CB
• Description: IC MCU 2.1MHZ 32K OTP 56-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of XC68HC705B32CB

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 256 x 8
• Ram Size: 528 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 56-SDIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ECLK
See
E1ERA — EEPROM erase/programming bit
Providing the E1LAT and E1PGM bits are at logic one, this bit indicates whether the access to the
EEPROM is for erasing or programming purposes.
Once the program/erase EEPROM address has been selected, E1ERA cannot be changed.
E1LAT — EEPROM programming latch enable bit
STOP, power-on and external reset clear the E1LAT bit.
Note:
E1PGM — EEPROM charge pump enable/disable
When the charge pump generator is on, the resulting high voltage is applied to the EEPROM array.
This bit cannot be set before the data is selected, and once this bit has been set it can only be
cleared by clearing the E1LAT bit.
A summary of the effects of setting/clearing bits 0, 1 and 2 of the control register are given in
Note:
MC68HC05B6
Rev. 4.1
Section
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
After the t
to zero in order to clear the E1ERA bit and the E1PGM bit.
The E1PGM and E1ERA bits are cleared when the E1LAT bit is at zero.
4.3.
–
–
–
ERA1
An erase operation will take place.
A programming operation will take place.
Address and data can be latched into the EEPROM for further
program or erase operations, providing the E1PGM bit is cleared.
Data can be read from the EEPROM. The E1ERA bit and the E1PGM
bit are reset to zero when E1LAT is ‘0’.
Internal charge pump generator switched on.
Internal charge pump generator switched off.
E6LAT E6PGM
0
1
1
erase time or t
Table F-2 EPROM control bits description
0
0
1
Read/execute in EPROM
Ready to write address/data to EPROM
programming in progress
MC68HC705B16N
PROG1
programming time, the E1LAT bit has to be reset
Description
Table
Freescale
F-3.
F-7
14